Bradley,
Yes it does sound like you have an air leak. I need you to answer a couple more questions.

1. Have you had the starter off?

2. Have you had the carby off and dismantled?

3. Are you getting any noises comming from the cylinder head area?

4. If you hold the blade plate do you get any movement side to side?

5. Remove muffler and check the piston to see if you have any marks on it.

Answer these before we go further and when you reply please use this link so it is easier to follow the problem.

Regards,

Bruce [Linked Image]

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.