Ok so it's been forever since I've been here, but here I am. I recently began working at a lawnmower shop and probably will have access to engines being tossed out because they weren't cost effective to fix. So, I'm to see what people have been converting lately. Most are better brand engines as in Stihl, Echo, and such. I just did a valve job on a Stihl 4 mix motor. Pretty simple setup. No gaskets on the case.