Hi Squid and Spicoli,

Thanks for the update, I'm glad to hear that you were able to confirm the blockage. Did you drill out the muffler nipple, or are you going to try the carburettor fix first, then the exhaust nipple if required?

Also, you may want to review the "fix" post (number 38 in this thread) for the carburettor adj. - if you find a better method, let me know. By the way, if the engine hesitates when transitioning from low to high, I normally have to lean out the low speed adjustment for most engines. The GMS seems to like it better if I richen it a little instead - why? I don't know. You may want to also verify this with yours.

I'm anxious to find out how you make out.

Thanks so much for all your help.

Fly4Fun,

Wayne Miller

Edited for typo