RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)
Gunssa is spot on. Do not run gas engines 300 rpm rich. That is for Nitro engines. 100 rpm rich is way more than enough to make sure you are not running lean. Do less if you are certain about your tuning.
I also live in Tucson and go to DA. I heard about the carbon buildup with the new Amsoil and am switching to Redline.