What kind of extensions are you guys using? Are you guys using extensions with connectors, or wiring in an extension? Length? I have a MMM as well.
I've been using something like this
http://www.amainhobbies.com/product_...ervo-Extention with my MMM. The wires on my two ESCs reach, but they are a bit tighter than I like and with a hard chassis flex I don't like it pulling too tight. I did pull a set loose from the ESC side once..