Wayne,
What gear are you using to clear an 18" prop???
I finished my F90 with a GMS 1.20, perry pump (tank on CG) and APC 17x6 prop. Came in at 9lbs 4oz, the GMS and pitts muffler alone are 35oz so I guess I'm on target. After some initial trouble getting the GMS to run I have it tuned almost perfect on the ground. The throttle response is VERY good and it's swinging the APC 17x6 at 9,000 rpms rich after two tanks of fuel. I think it will be a great setup at a CHEAP price but I'll have to wait for a nice weekend to try it out [&o]
Only problem is the 17x6 is going to do some grass mowing
I need some taller gear.