http://www.rcuniverse.com/forum/m_16...tm.htm#1686154
RichD
Above is the thread I was telling you about. Give it a read.
Throughout this forum and the glow engine forum I have seen both good and bad said about GMS engines. There is even a thread somewhere that is titled "GMS = JUNK".
I believe that they are very good engines as most of what I have seen is positive. I just got mine installed last Sunday, but have yet to run it as $$$$ are very short around my place.
Good luck with your engine.
Larry