Not sure what you mean by #w, but what I did is wind it first on to another 120 spool and then wind it onto the 127 spool. Sounds harder than it is, but you end up with everything okay. It might be possible to configure a bulk loader to wind it more easily, I'll check when I get time.
I strongly advise sacrificing one roll to do it with lights on, you can then see what needs to be done.
Hmm maybe I should cut some rolls and sell 'em