I have been facing problem with my bike HH Hunk. this Hunk is full crap made by HH.Now they are making crap S?#*% from their factory. First of all gear pinions(4) changed within 1.5 years due to several broken teeth.The svc denied to give me the warranty as I didn't use their cow piss like engine oil. gear pinions changed for 2.5k. After some months now the problem is whenever i start the engine a sound like tack tack is coming from engine head, and it gets louder when throttle used. consulted with my old mechanic,he told me engine cam completely gone due to oil leak from some oil seal and as a result not able flow the sufficient oil to the cam and it is gone.Need to change the cam with some other parts(i forgot all the other parts name)i had been facing problem like bad mileage,drop of acceleration.Now changing of cam with other parts will cost about nearly 3k. What the hell HH made.within 2 years and nearly 9k about to complete this kind of problems occurs. the mechanic told me change it ASAP or it will affect the piston.... I am asking for help that is there any work around without changing the cam.Or the mechanic is trying to make me fool.... Is there any positive sign to check whether it is cam problem or else. I use power1 10w30.not ripping the bike like hell,change the gear within 4k or 5k rpm,used to change engine oil within 1.2k kms. Xbhpians please help...... need your reply urgently........