Hope it isn't an issue bringing up this old thread.
Had a T-nut strip out recently on an Olhausen rail and repaired it myself. The rails play ok but don't seem as lively as they should be. Getting the humidity correct in the room seems to help a lot.
Reading here regarding the 7 bolts...
Set of mint Aramith Super Pro balls for trade only. Looking for a comparable condition set of Brunswick Centennials or Aramith Super Pro TV set. May consider other trades as well. Sorry for the poor phone pics.
Traded