Voldik,
Your problem is simple when you took off the blade plate that is your balance for the timing also if the blade plate is loose that will cause the same problem. Replace the blade plate and your problem will be gone or you have damaged the flywheel. If you have any further information just e-mail through the contact details on this site.

Regards,
Bruce


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.