I maidened a Ultra Sport Plus last Sat. Very nice plane . flys on rails. I side mounted a 70 FS, though it doesn't look as cool as inverted, no problems with engine runs. I have only inverted one engine and it was a pain in the butt. I also modifird the landing gear. I made it a tail dragger but mounted the gear on the fuse, not in the wing as the instructions suggest. I do have ground handling problems, it wants to nose over on our grass field. I'll bet the suggested mounting in the wing is even worse,as the gear would be a bit further back than my set up. I just finished placing a wedge under the gear to kick it forward. Hopefully it will help with the nosing over problem. This is only my 4th kit build and I found the 40 plus a simple straight forward build. A great flyer.

gary