This is something that is very hard to diagnose for certain, without being there. I think that you are going to have to make the determination yourself, from your listening and adjusting process.
Even though damage to the record is unlikely, it could have happened. Playing ok with anouther rig and cartridge does not preclude possibility of damage, because the cartridge may trace a different area of the groove, depending on the stylus shape and dimensions, as Jameswei said.
I would also check the azimuth because the machining of the collet could have changed vertical alignment, and re-check all the cartridge alignments. The large VTA movement you did when you re-installed the machined collet could have affected the overhang adjustment slightly.
That sounds like a very nice rig, so it should be awesome sounding. Good luck.
Even though damage to the record is unlikely, it could have happened. Playing ok with anouther rig and cartridge does not preclude possibility of damage, because the cartridge may trace a different area of the groove, depending on the stylus shape and dimensions, as Jameswei said.
I would also check the azimuth because the machining of the collet could have changed vertical alignment, and re-check all the cartridge alignments. The large VTA movement you did when you re-installed the machined collet could have affected the overhang adjustment slightly.
That sounds like a very nice rig, so it should be awesome sounding. Good luck.