Oh, and make sure u replace your stock plugs with the CM-6. I had one in my DL-100 disintegrate in one of the cylinders. The motor was running on one cylinder and could still hover my 33% Yak 55. I can't believe it was still running in the condition I found the plug. If this had happened in my DL-50, I most certainly would of had a dead-stick. Jodi, here it comes.