Hi Tonywayne, Pls.take a look at
http://www.kangkeusa.com/Engines/skengines.htm
I have 2 SK .50 and 1 SK .80 ringed.
Im so happy with .50.(. 80 is still in box).Reliable, never deadstick.Very easy starting,easy adjust,cheapest,good care of salespersonel.
I strongly recommend to think of it.