Ken,
I don't know how old your motor is but mine was just under a year and had problems staying running after the first start of the day. I would get about 3 mins in the air and have to dead stick everytime I flew when motor was warmed up. After calling Bill, he mentioned that CH ignitions were having a recall on their ignitions. For some reason when they got hot, they would kill the engine. Sending the ignition back under warranty, they fixed it for no charge. To say the least, the motor hasn't missed a beat after flying back to back to back.
I know its different indications but hope this will help you.

TJ