Adrian,  the Licensee rolls will not play on a Red machine because the
roll feeds from bottom to top, and the tracker bar is longer, to
accommodate the 12-7/8" Red rolls, as opposed to the 11-1/4" Licensee.

Jim Miller made a Vorsetzer to accommodate all 3 major reproducing
systems for Joe Tushinsky in the 1970's but it was expensive and very
unique.

It would be easier to accommodate the Green Welte and Licensee rolls
on the same spoolbox/tracker bar.  Ken Caswell did this with little
additional effort, also in the 1970's; since both systems are the same
width and feed from top to bottom.

The only other way that it could be made to work would be if you had a
separate spool box and wind motor to handle the Licensee roll and teed
into the Red trackerbar tubing.  With the dearth of Red rolls these
days, it really isn't worth the effort.

I have both systems and have considered the question before!

John McClelland