Anyone else have one fail ? Took my 54 F100 out for it's second run & the power brakes where dragging. Came back home replaced the master cyl. & proportioning valve & had brakes again. So I go to start it up in nuetral & the truck goes forward & smashes the front right fender on my metal 10' bench before I can stop.. I think I spent 2 or 3 days fixing rust & dents on each fender. Slept for about 3 hours tonight & up at 2 AM. I should have been a carpenter like my Dad.