XJET:

I have looked at a few of the latest engines from GMS. It looks to me like they have corrected the hole alignment problem. While the hole is not dead center, it is not so far out that the fuel has to make a 90 degree turn to get through it. I am back to recommending the GMS again. With the problem solved, they make a great 3D engine.

Just a word of caution on the TT engines. There are some quality control issues and poor customer service issues with ACE RC. I hope I can say that without getting slapped. Our local hobby shop discontinued the entire TT line, because they couldn't deal with ACE anymore. You can read on many threads within RCU to back this up. I have always liked the TT line also, but they have their issues, just like everyone else, I guess[].

Andy