I haven't yet looked into this so here's usually the best place to start. I need more brake pedal for the rear brakes on my B20. The parking brake latches on the last knotch on the hold down thing and it barely holds the tractor. I backed it off the trailer last night and it takes all its got to hold it on the ramps and when its coming down I don't think I could stop it, I dang near took out my garage door. I need the brakes to actuate sooner because it feels like the brake pedal "both latched" bottoms out. Is there a mechanical adjustment on this???? Thanks in advance Walt