Jeyre,
Thanks... knowing it's appreciated maeks it worth the while. I've learned so much from RCU that I think it only fair I give back.
Emvin, I certainly don't blame you... a person should feel comfortable with the procedures they perform and have the utmost confidence in their plane.
At 5 7/8" from prop washer to back of carb... that leaves you only 1/8"...
If you can find a more adjustable mount like this one:
http://www.horizonhobby.com/Products...ProdID=SEA3082
You might get the engine within 1/8-1/4" of the firewall...
I'm sure that 1.80 would rock this plane as well.