Here's an odd one for folks to ponder.  I've got a Marshall & Wendell
Ampico A piano and occasionally on some rolls the roll just stops
moving.  It feels like the take-up spool is still trying to turn but
some sort of brake is holding the roll.  It will stop for 10-15 seconds
and then resume normal play.  I'd say that this happens between 1/2 to
2/3 of the way through the roll.

It's really intermittent and if I let the roll finish and then replay
it may not do it.  I have noticed the problem is only on the long
recut rolls and not on long original rolls.

George Wilder