<font size="2" color="#00265e">KazeRacing</font> &amp; <font size="2" color="#00265e">opjose</font>   How far do you have the end of the cowl to the leading edge of the wing?  The manual says the distance should be 4 15/16" from the firewall to the end where the prop would rest on and with the cowl on the spinner back plate should have 3/16" space.  Last night I mounted the engine and measured just over 4.5" from firewall and measured 3/8" from backplate.  I moved the engine to the next hole up and got to like 4 13/16" from firewall which is closer.  I figured I could move the cowl forward or backward to make up the 3/16 space from the backplate if needed to but I am taking a chance when I cut the cowl that the muffler hole is not cut in the correct spot.