I had a MVVS 2.15 with the old round film can ignition that went bad. It would run greta, and then all of a sudden die. I chased "carb problems" for a while before switching with someone else's ignition, to find out mine was intermittent. Morris hobbies was able to send me a new igniton with a new prop drive, (magnents were different), and that completely solved the problem. It was a great running motor from then on. I think the cost was about 150 bucks for the new ignition, and prop drive. I did have to wait for a while as it was ordered, as morris didn't have it in stock, but they did get it eventually.