Query approved.

First of all, be clear in explaining your problems. Your post leads to different problems. The sound has nothing to do with carburetor. The engine untill 2000kms will be on the hotter side, as in a new engine the friction between the parts is more as compared to a 4-5K old engine, hence parts get heated much quickly and the intensity of heat is also high. The sound of the engine is no issue. It's normal. The problems you have enlisted are actually different phases of run-in period.

P.S: Let the bike complete its 1st servicing and then observe the response of the bike. And then repost the feedback. During and after 1st service almost all of the problems (other than normal run-in nature of bike) will vanish.

Umm, yeah. Thats why i wrote 'Besides,' in the sentence where I explained the carb thingy.

Yes, I guess the engine will become less hotter as the miles roll by. However, a less crispier throttle is somewhat of a sign of a bad carb setting, right? And from what i read in the UT on carb tuning, a bad carb tuning could attribute to higher temperatures. And higher temperatures are apparently contributing to engine noise, which again, I guess is normal.

So, its somewhat interconnected from what I could make out and hence wrote about that as well so that those who read it know what else might not be in place.

Thanks, though. I also guess its the new oil settling in. btw, is the bajaj 10,000 SS or mineral? And when do you suggest I dump this and go for a mineral/ss?

dont go for SS till you finish 2000 Kms (do let the new engine and other components to settle down then you can go for SS)

if you go for SS now you wont feel much difference

Bajaj 10,000 is a mineral oil (original oil manufacturer is none other than Castrol)

it seems your odo is somewhere in 500+ kms so try changing the oil at 1500 Kms on ODO

You are talking about FAULTY carburetor tuning on the bike which is out of factory? I guess that is not the case with your bike. As you have not done 1st service the carburetor setting should be stock. So, the chance of going too lean or too rich which causes engine overheating vanishes away. Give sometime to bike untill 2000kms or 2nd service. The problems are not what you are thinking they are just part of initial run-in phase, happens with every bike.

Just Ride safe and forget all those things.

P.S: Bajaj oil is SS. Instead, buy Motul mineral or Valvoline or Castrol (if you didnot get any of the oil this comes last) and pour it. But, be sure to get only 20w50 oil which is meant for bikes or wet clutch bikes.

No, bro. I had my first service done. I wrote it in the first post. Its after the first service that the crispness of the throttle has faded quite noticeably. (as in the engine revs a little lazier than before and the acceleration seems to have slumped slightly too) And the heating issue remains, but that i can attribute to the engine being new.

During the first service, i told them that in the mornings the bike has trouble starting up and warming. So I told them to check the carb. I don't know what adjustments they made. Now, the morning startup prob has decreased but hasn't gone completely.

btw, they poured that Bajaj oil in the first service. So I guess its ok for me to go for Motul 5100 some 1500 kms later, right?

And I'm going by your suggestion to wait till 2000kms. Although the SVC called for a follow up, I told them that it doesnt feel as good as it did before so they asked me to come and show it to them. Will see what they say.

By the way, just to confirm, was the rear wheel a bit tight for you in the beginning? It seems as if my chain isnt that flexible and hence the rear wheel isn't totally free.

My mistake... If they have altered the carburetor tuning then get it redone. The rear tyre will always be a little tighter than the front one, so no concerns.

Hey, So i went to these guys. About the carb thing, he adjusted it. It's slightly better now.
And he also adjusted some bolt on the rear brake wire line (somewhere around where the footpegs are). After that, the rear wheel is totally free. He said that the rear wheel was tight enough to make a slight difference.
Anyway, bike running ok now. But not as good as before the service. Guess its the oil. Will let things be till 2000 kms.

See the feeling of bike and its ride characteristics will not be the same as when you purchased it. It might be that they have improved and you are now feeling something odd that makes you wonder if something is wrong. Be it as it is till 2nd service and then keep an eye on the problems if they are really there or not.