Excellent question I know mine tremble a bit when running but I never spent any time changing the position to see if it would help. Maybe I should spend some time and see. So in short I don't have an answer for you. I may have just gotten lucky and have the positioned close to oppisit the piston. I'll need to check on that next trip to the shop and see. I would venture to say yes the smaller hole is there to take some of the shake out, I never even gave it any thought but I will now lol.