You probably don'y know it, but on Auto Pumpkin forums, they have a lot of issues with the MTCD devices like you are having. They are always giving out firmware and asking did that fix it and most cases, nope. It is always Bluetooth or something. So you are fighting the same issues they are..
So stay at it if you can for the people who have MTCD's, I have MTCB unit.. Roms are good for me.