Sorry, I can't help. Not sure which post you are referring to but I really don't remember using that engine.

Hellow tonyf... Sorry to bother you again with this issue, send you an mp but not if you received it, I know well the operation of the forum.I wanted to know if you can give me some help with the engine air hobbies, I have one just like yours post you uploaded a while ago, you can comment me how many cc have? that prop does better in acrobatic, if you replaced the exhaust other lighter? Well in short what you think might be useful for me to have the same engine.
Thanks for your time