So... yeah I have 66cc, I don't have the 3 piece crankshaft, I don't know how to take it apart, I did this to get rid of the vibration at high revs, It helped me a lot, but now it bogs down and it has very low power. I made two 3/8'' holes I filled all 6 holes (4 stocks and 2 I made) with RTV silicon and JB weld. I really dont know what is the problem. Maybe I screwed up one or both seals, I don't know. Any suggestion is highly appreciated.
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