Wilst on the issue of tape booting....

1) I am beginning to have read problems on my TK50 drives (all four of them).
   It appears that it is most likely a transport cleaning problem.
   What is the good/better/best/proper way to clean TK50 (or even TK70)
   tape transports?

2) What is the proper way to erase TK50 tapes?  There is no operational
   erase capability in the drivers.  I sense that IFF I could fully
   erase the tapes, that might clear up some of the problems.

Thanks for any insights, suggestions, etc.

Bob