Hi chuck,
        I used to have 100% utilisation more often than not.

The  model we use is the C64-3995 optical library.
Trust me in 1 and half years we did'nt need to change a volume.  Now I have
damaged files
on volumes which do not have any error.

Now AS far as the drivers microcode is concerned , It's a probability. But
there is unfortunately no later version of the microcode available.

What about moving on to the Enhanced version of the 3995 model.?


Regards

Sri