ORIGINAL: TimBle
yeah, sounds to me like its a fairly peaky engine and therefore not suited to pattern. Have you tried a DLE30 or RCGF 32 or Mintor 33 or Evolution/MVVS 26/30cc in that plane?
That's the thing though, several of us have used the engine for pattern with good results. I fly AMA Masters schedule respectably with my set-up. The issue is my flying, not the fault of my set-up. I could have the latest wiz bang electric system or YS 2000 and still have the same issues, make the same errors, etc etc.
On the Mintor 33, it's really interesting little gassie but I can't get the local guy here in the states to return phone calls. I also want to see the new OS 33.
If I recall, you were playing with a Mintor 33....how did it go? Is it piped? Soft mounted? pattern application? Which plane?