Greetings,  I recently completed a five-month restoration of my
little Seeburg L coin piano (serial number 53536, made in 1921) and
last week I dropped the first nickel in the slot.  To my delight,
it is playing strong and loud and everything seems to be working as
it should, except for the rewind mechanism.  I'm hoping for a little
advice before I remove and tear it apart for the second time.  Here
is the problem.

When the rewind is triggered from the perforation in the roll, the
pneumatic partially closes, lifting the roll drive shaft to engage
the rewind gear.  However, the gears will not fully engage, but only
grind away like they're trying to self-destruct.  I tried adjusting
the assembly slightly up and down, but without success.  This leads
me to believe I either have an air leak in the pneumatic or something
is wrong with the rewind valves and/or their corresponding small
pneumatics on the back of the unit.

Thanks in advance for any thoughts on how to solve this dilemma.

By the way, this is only my third player restoration, the last being
in the 1980s, but it was my first experience tearing into a stack which
had previously been "restored" using the kind of glue that sticks so
well that an enjoyable project can quickly become a nightmare!

That said, I just want to echo an earlier post on the subject of glue.
If you are contemplating a player restoration, please use hot hide
glue.  It's more of a hassle to use, but will make life a lot easier
for the next generation of restorers.

Ron McUne
Medford, Oregon