In answer to your query, Diablo, it's very possible that an unknown, but later appearing, problem developed with the module.

In my own ignition, it received a new Synchro-spark module, which supposedly "fixed" the problem, but after 5 flights in one day, the ignition refused to work 3 days later. No spark at all at the field. Then, this morning I checked the 'bad" ignition before swapping in a brand new unit, and it worked just fine. Great 1/2" sparks and very strong. Needless to say, I still swapped in the new ignition, and the old unit is on its way back to CH. This is the second time that "bad' ignition pulled the same "heat sensitivity" problem with me, and now it's also the last time.

I would like to say, though, that CH did provide a replacement upon request, which is just the right thing to do in this case. Hopefully, whatever problems that have cropped up will be resolved for all customers which this happens too. Nothing more frustrating than to flip the prop and have nothing happen.