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Thanks Jenny, the bits you sent are great, best parcel wrapper ever! Compression is 60psi so a tad low….
Will check valve/tappets first but it may be worn bores. Might be settings as engine was supposedly fully rebuilt.
Fingers crossed

Can anyone tell me the correct compression ratio for a 1966 Corsaro 150 and where I can get an oversized piston if needed?

Does anyone have any kickstart components for 1966 150 Corsaro? Or 125. Particularly kickstart gear and pawl?
Dave, 07950090343