BROTHER BUZZARD, Whenever a HALFWIT goes down, in the line of duty, it's a terrible loss, but we must work through it and continue on. I had one drift into a tree in my back yard but came out much luckier. The engine continued to run while the plane was stuck 20 feet up! I never knew there was a ball bearing version of the AP. It's amazing that such a good little engine is available for $39!