Some of you guys recommended a JBA 56 when I posted looking for a good value and good power in an inexpensive engine. Well, I got one the other day and on the bench it looked really promising. I strapped it in a plane and flew the stink out of it today. Very impressive! It's basicly a half priced OS 55AX! The carburetion was excellent, transitioning very smoothly at any throttle opening. The only small problem is on shut-down(or not shutting down actually!). It will continue to idle super slow with the throttle barrel fully closed. Someone tested out this engine in another post and reported the same thing, but said it got much better after a gallon or so. All in all, a very impressive engine that I would recommend as a really good value. Thanks guys for the good advice!