If you undo the p rod at the pedal and w the pedal "up" and the M/C piston at rest you'll see if you need an adjustable one to make up the difference. If you plug the M/C w 2 brass Edelman brand inverted flare male fitting from your parts house (only several $$), at that point if the M/C is bled out (and good) the pedal will be rock hard and have virtually no travel. Check the length/then plug the M/C/then bleed the wheels if still a prob