Hello,
I'm building my first plane, it's an older all wood Avistar 40 ARF (not the newer Select version). I've almost got it asembled but when I go to mount an O.S. .46AX on it the muffler doesn't clear the right side of the plane if I place the engine where the manual says it should be. I've double checked the engine mount and everything seems to be as described in the instructions so I'm not sure what the problem is. Additionally, the throttle wire seems to be much too high for where the throttle lever on the .46AX is, I can make it fit without too much bend but it just doesn't look right. Is there something that I'm missing and if not, how do I fix it? Should I shim the engine up or trim the side of the airplane to make it fit?

Happy to provide more info or pictures if needed.