I ordered a new engine mount for the DVII. It's a Dubro adjustable (composite) for .60 to .120 engines and should be the cure for my problem. I have a on of those for a .120 to .180 but, it's obviously too large. The mount should be here tomorrow.
I have a choice of an old OS FS .91 Surpass (new ring and thorough cleaning) OR a Saito FA .91s (runs great). I'm not quite finished reassembling the OS as I lost one of the valve spring caps while trying to re-install them. Fortunately, some parts are available and I was lucky enough to find them. They should be here tomorrow. I was successful getting the the exhaust valve installed today after much frustration and exasperation. Once I get it running right I'll make the decision on which engine to install.