well it seems that after 35 years i need to replace my shower valve seals. problem im having is i can get the knobs off but when i put the 15/16ths socket on the valve it wont move. i sprayed it with penetrating oil but still nothing. i was thinking about using a propane torch to heat it up. i really dont want to have to take everything out and replace the whole unit. not if i can fix it with a couple $6.00 valves. any one know of another way, other than heating it, to remove it.