Bretd123 asked for opinions on Evolution and O.S. engines. I'm sure he would listen to opinions on Magnum and Thunder Tiger! As I said above, I am (almost) totally O.S. I do have two Magnum 4 strokes, which I think are made from the original O.S. 4 stroke castings. I also have one Saito engine, but have little experience with it. Shortly I will own a Zenoah G-26. All I was attempting to state was; I have had very good experience with O.S. engines.

I actually feel for any product to have made it to the market today, its' quality MUST be on a par with the competition. If the quality isn't there, it just won't make it!

When people posting to R/CU are concerned they will be flamed for having a different opinion, this negates the validity of any opinions given on a subject! It is also of no help to the original poster.