buy a plate of sheet metal and cut the shim in to a square a big as the square on the heat shield ( you will see what i mean when you open the machine up ) place the shim on top of it close the machine up dont screw it down see what it does continue in this fashion untillthe bleeder works ( or until the shell doesnt fit any more then its really dead ) affix the shim with some aluminium tape and it will ...work ..for a whil

think about investing in a paint stripper