First I want everyone to know that running your engine too rich for too long is not a good thing. I did this and carboned up the cylinder, piston and ring on my DA50r. Eventually the ring stuck and compression was all but lost and the engine would not run. I sent it back to DA for repair using their service form and explained that it was my fault and please do whatever was necessary to repair it. They did, and the turn around was a little over a week. They replaced the piston, ring, cylinder and other little peice parts. The total charge $0. Thats right $0. I almost passed out. The engine is still under warrenty but Remember this was my fault. GREAT CUSTOMER SERVICE, ABOVE AND BEYOND
I don't know if DA is the best engine out there (I can't own them all to compare) but I do know that if they make the size that I need I will always fly with DA!!!