I pulled the springs, cleaned the tubes and lubricated them a bit, but my M12v doesn't slide up and down when held by the plate like Bob's does on the show. One thing I noticed is that the tubes that end into the base of the router butt up against my base plate and seem to need some way for the air to escape/breathe. I drilled some holes through the plate and that seems to help. Is this what Bob did with his baseplate also? Just curious.