Ok here is my problem. when i do speed runs my car glitches its like everything shuts down and kicks back on real fast its like losing signal and gaining it right away. i have my motor connected with 6mm bullet connecters and the motor is a feigeo 380 6l and im running a max amps 8000hv 3s lipo but it doesnt matter what battery or radio i use it always does it. i was thinking it may be because of the aluminum idler running against the steel top shaft. now im seeing this is common so how can i fix it?

Try cleaning and reassembling the 6mm connectors. Make sure the connection is very secure!

Serum said his loosened up with use which makes brushless systems go absolutely nuts!

try running an external bec. I was having this problem with the MM too, until I went with the external bec. I don't have any technical details to refer too, but I suspect that the internal bec on the MM isn't the greatest. I believe that what you perceive the be glitching is the internal bec cutting current to the radio for a split second, the rest of the non response time is due to the radio rebooting. Try the external bec. The one that Mike sells is nice, but if you are on a budget, there are a bunch of linear becs that can be had for $10-$15.

ok ill clean them would it be ok to use electric grease also to help connection i know it works great for towing trailer plugs

I've never tried it on brushless connections and I'd be hesitant to do so.

Try electronic connection cleaner (similar to tuner cleaner) and wiping with a cotton cloth. available at Radio Shack or a quality electronic parts supplier (McMaster also sells it).

A little more info on the MM quirks. I was reading through all the settings on the Castle Link and the "Start Power" description really interested me. It tells you to increase it for applications like crawling or if you experience stuttering at a standstill. Has anyone tried maxing this setting out? Although, I still think increasing the throttle limiting would help a lot.

Brain, it's funny that you should mention that. I emailed Castle and tried to get help with the problems I was having with my MM cogging in my Muggy. They told me to reduce start power to its minimum to reduce the current draw of the motor. That didn't make sense to me, because I figured that if the motor needs the current, it just plain needs the current. I tried it anyway, and things got worse. I turned it back up to the highest setting and things got better. Increasing the punch control also helped, but made it impossible to jump the truck.