Hi there Bass 1,
I was just reading your post regarding the problem you are having with your CH ignition. I had the same problem with my CH ignition which came with my Brison 2.4. I installed my 2.4 in a new model and fired it up to run the engine in,no problems at all. The engine ran great,ignition obviously working fine. Then I read on RC Universe that CH ignition units manufactured during a certain period could experience a temperature problem and owners were advised to send them in for repair. I sent mine in to CH (What a great bunch of people to deal with) after a call to Terry and promptly received it back DOWN UNDER by Air Mail good as new. I installed it back in my model and proceeded to fire it up. No Spark, dead as a doornail. I spent hours on the set up checking everything narrowing it down to no power to the hall sensor. The problem turned out to be a dry soldered joint on the DEANS connector between the ignition box and the hall sensor. Resoldered all the Deans terminals and not an ounce of trouble since. Sorry to drag out this post but it just shows how an intermittent problem like that can really be a mind bender. I hope this may be of some help to you if your new hall sensor does not fix your problem.

All the best IAN