Hi greens_tuf,

Here are a couple of things to look for as I don't think that it would be a carburettor issue.

1. What is the ring gap when in the cylinder? If the gap is to large it will cause the issue that you are having.
2. Do you have any movement in the crankshaft if so replace the bearing as the seal could be damaged. cheers2

Regards,
[Linked Image]

Bruce


Please do not PM me asking for support. Post on the forums as it helps all members not just the individual.