I have a 48cc sky hawk it's been running good until I noticed a leak at the exhaust gasket.I put a new gasket and a new stock muffler on and now it lost power from 1/4 throttle to wot it just kind a bogs.So I thought since it had a exhaust leak it would run leaner, so I raised the needle up one notch after I fixed the exhaust leak and it starts better cold but it has no power Thur mid range.I tried to drop it back down and still no power.My question is what should I try to do ? I Need some Idea's.
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