Well, I completely disassembled my M-11 last night

. After about 30 minutes of tinkering, I came to the conclusion that unless somebody actually manufacters a modified trigger tension bar (which is what creates the 70/30 neutral stop point) there is no way to change the 70/30 split. Modifying it on my own may not necessarily resolve the issue because I'm not sure if the potentiometer that the trigger is attached to requires a specific center point, or if its a variable pot where the center doesn't matter. Either way: I'm not interested in wrecking my radio to find out.
I'd still be interested to know if anyone had come up with a solution or mod for the M-11 trigger.