I have the GMS .76, .32. and the .47. The .76 is on my Four Star 60 and the .32's are on my Twinstar and the new .47 is on my Four Star 40.

Some of the GMS engines have an issue where they won't shut off when you close the throttle, but I am very pleased with the performance of these engines. I read an article that claims the reason the engines won't shut off is because the clearance is a little loose between the front bearing and the crankshaft. I did take my .76 and .32's apart and put a little locktite on the front crankshat and it fixed the problem on the .76 but not the .32's.

Hope this helps.