BK12 end float?

[JAZZCNC]

I've used loads of them and it can be hit and miss. Mostly they are Ok thou and the ones that's are suspect usually only need stripping and reassembling. I always strip and re-grease anyway so not a problem. Occasional I'll have to make a shim and at worst throw one in the lathe and skim bit off.
The most common thing I find is the spacer isn't long enough so the Nut or screw catches the seals, again I just whip up one on lathe.

Really for the money you can't complain and I think you have been a bit unlucky if they are all like it.? To make your own would cost more in materials then you have the time factor. Better for me if at worst 20-30mins stripping and fettling than half-full day making my own and costing more.

Wouldn't Loctite that's a bodge IMO and not good enough for CNC work, best just doing it right and slip in a shim or skim bit off.!!