I got one from Keith and have looked it over very closely, compared it to the 14 others I have here and see no issues what so ever with them. They are later 12mm pin type that have the also later EPA regulated port timing numbers. I did not put this cylinder on a saw to run it yet, just timed it with the piston that came with it. There is absolutely nothing wrong with a stock running 044 or MS440, they will devour wood but some of us like to play with porting numbers and shapes just to get some extra out of them.No , but I have shipped one to Jerry(one of the site moderators, and 1 to a guy in wyoming
and they liked them