Troy, here is a link I came across from a freind concerning tunning on these motors. It is very in-depth and should make tunning alot easier even for a newb to YS such as myself. It seems to be a little old as it uses the .91 and not the 1.10. Would there be any recommendations for the 1.10 that aren't covered on here that are different from the .91?

I use full syn. high performance oil from CoolPower to prelube all my motors after purchase. Ususally I would disassemble and clean the motors with denatured alcohol prior to running, but four strokes are alot different than 2 strokes when it comes to this. So I just stick to lubing them externaly. You'd be suprised how how much material can be left in a 2-stroke after assembly at the factory. Mostly shavings from being machined.

[link]http://www.probuild-uk.co.uk/factsheets/ys_engines.php[/link]

Thanks Shane