Thanks for the info and the links. As soon as I have completed filling out my order for a OS200 I'll dig into it...
Yup I ended up with the OS200Fs with a Hyde soft mount for this plane.
Allthough tempted to try out and see what all this YS hype is all about, I opt to go for ol trusty OS as I have great experience with em. Also I am somewhat limited to 15% fuel (unless I want to mix the brew myself....NOT). Also the idea of getting down to the field and just be able to start the engine right up without the DZ an...al tinckering that I know nothing about makes me belive this engine is the right choise for me.