Ace, I found it in the classifieds on another site. The price was right to take a chance. It had been converted to CH ignition but set to zero degrees. The guy I got it from said it was basically new ran a couple tanks with original ignition before it failed, could not get it to run at all with the CH. I rebuilt the carb and set the timing to 28 degrees and she fired right up. I just got home from flying an hour ago and she was spinning a Bolly CF 30x12 at 6,400. A bit too high for my taste so I have a Mej 32x10 to try next. Overall I am very happy with the engine. The smile says it all.