Are there any conversions that will produce similar performance to weight as the high $$ performance gassers? I would like to go gas in my H9 Cap but I cannot find an economical gas solution.

I was considering the MVVS 1.6/2.15 but am yet to hear any actual flight reports. Vertical, hover, sufficient performance to do 3D etc. An actual flight report would be great!

Other than the MVVS can anyone report what type of performance they are getting with a Ryobi 31cc conversion or chainsaw?