Sluggish performance

Thakid8789

New Member
Jun 11, 2019
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I have had a 60/80cc bikeberry 2 stroke motor for 9 months now and just recently I have noticed a server degradation in performance even at full throttle I have checked my seals and they seem ok and I have also changed my spark plug with no boost noted. I haven't changed my fuel oil mix since its been broken in. Can anyone help me out?