All my planes that came inverted had no mods, H9 Aresti, TT Spirit, WM Rambler 45, Seagull Harrier 90 and a few more. I ran 2C and 4C engines. They all usually had slight problems firing up the first time for the day, after that it was ok. At the most I only need an electric starter. I think its in tuning the engine patiently, thats all. No magic to it.

There are a few Tucanos at my flying field, I see them flying more than fiddling with the engines. I flew my pal's with an OS70FS and it was nice to fly especially on a higher pitch prop. Anything of 7" or more is nice. It will tip stall on you if you try to come in way too slow. The tapered wings cause that and its not that bad just do not expect it to come in like some other low wing sport plane. Come in with a little speed, it does not need to come in hot.