any resistance = time for a rebuild
but play is a bigger factor
something spinning 100,000 rpm can have no play
but rebuilding a turbo is fairly eazy just replace the bearings and seals
unless the shaft or blades is bent or wornout
parts are under a 100 for a like new turbo
to4 are fairly common but yours is the bigger one
still should have more to the IDlike to4E
and M24 is not a type just a casting mark on the inlet side
could be a t25 t28 or t28BB t3 maybe others too
with out knowing which has play and full ID of to4
and what Garrett you have hard to give a real value
------------------
Question wonder and be wierd
are you kind?