MixMaster... I like your ideas! Thanks a lot!

I have successfully used rubber-backed washers in vibration prone areas. Also, I have grey silicon amoung my junk bins. So whether I opt to use my YS-110 or purchase a two cycle engine, I'm sure that I'll adapt your suggestions. Reaming out mount holes will not bother me, particularly since I almost never consider re-sale value. I already use medal strips on the back side of my profile engine mounts as a washer to reduce crushing the wood.

Fly safe, Glover