I have the new Cub still in the box (it is waiting its turn in line). I WAS going to use the OSGGT15, but after checking many things out like needle valve placement and air-cooling problems, I've decided to throw a DLE 20 RA on instead. Probably too much power, but I'll just set the carb to about half way for wide open. Curious to see what some of you guys run and the plusses and minuses of each.