I finally received my hall sensors and was able to get my Cougar back up and running. The NXT mod from Ian is very well made and Ian is very supportive.
If anyone is considering the mod and hasn't done it yet, it certainly seems to fix the problems with both the pots and action. Word of warning... get your hall sensors before you do anything else. Ian will ship quickly, the Cougar is readily available (if you don't have one), but the halls are tricky to come by.