Hello Bill,
I have the version of the 120 Surpass with the Breather nipple. I believe it to be the E model.
I was wondering what your recommended Nitro content and prop size were.
I wrote you not too long ago about the Super Tigre G2300 on 30% Nitro. I was wondering if this engine would respond the same way.

Also, if the metal (intake) tube running from the carb to the cylinder is bent, what do i need to order as a replacement?

This might be a newbie question, but what is the procedure for using the choke on this motor. I have never had a glow motor with a choke (that wasn't my finger!)

Thanks in advance,
Jim Prieto