Rockboy, Tape shedding is a function of too much moisture that the tape has absorbed.
We recently did a reissue of an early 70s LP; the master tapes were stored in an attic and because it was dry and often hot, the tapes were in immaculate condition.
If a tape is shedding oxide on the heads, it can be baked in an oven at low temperature for about 45 minutes. This will chase the moisture out of the tape and if stored in a plastic bag with a packet of silica gel, will be good for a few years before it has to be baked again.
If the oxide is shedding so badly that the tape is stuck to itself, there may be nothing you can do.