1. Can i need to do Spark plug replacement?
2. I have not observed any fire in sparkplug adaptor but i too feel some times jerks while riding in top gear. Should I replace GS spark plug adaptor with Slingshot/Zues one?

3. Any other things need to verify...?

I haven't altered any stock Carb settings till 5th service. while 6th service i am not at svc while servicing else i can assure my GS running with Stock carb settings. My GS always given more than 55 as mileage at both mumbai and Hyd roads.
Please share your suggestions......





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