John Meeks-- I fixed the problem.Thanks for offering the new  bleeder valve
screw,but I dont need it anymore.The security of knowing that it was
avaliable prompted me to go ahead with my screwectomie. The correct bolt
size is M10 with a 1.0 thread pitch( for the archives). I would suggest a
bolt shorter than 20mm.I would rather have this bolt cause it wont break. I
think I will leave off the rear heater cover as it will give a few more
cubic inches of storage space. With the bolt,I dont have to fear that
shifting of cargo will break the bleeder screw.