Congrats on the 35BHP! Very good value indeed. From my dyno runs these engines have between 28 and 34 BHP - I ran 6 different 459ccm 29kw engines my dyno. Are you gonna to tune your engine? Which vario setup was in your engine?
Differences between rear wheel and crankshaft output was around 7-9 hp on my dyno with blocked vario transmission (so losses on wheel/dyno, secondary transmission and vario).