R.Johnson, I feel like I owe you a steak & lobster dinner and a case of your favorite beer (if you imbibe) for the info on the ability to adjust the sensors on the timer base. Received the CDI Sensor Gap Guage, adjusted the sensors as instructed and lo and behold I have good spark now and the motor roared to life after trouble shooting an intermittent to no spark problem for the last six to nine months. Thanks so much!! My wife especially thanks you - I'll be taking her out skiing this weekend!!! Does anybody know what the idle RPM should be on muffs - it seems to be a little low now. I had previously rebuilt & cleaned the carbs prior to the no spark problem and I'll probably do a link/sync to make sure everythings up to snuff in the carburation department. Thanks again, R.Johnson, you're a lifesaver!!! 