Screw isn't just shorter, it is non-telescoping. I have all those parts from when I bought a TA and installed it on my non-TA equipped 13.
As above, I cannot imagine why you want to remove it. I make frequent use of mine. I figured out a trick to setting it using a dial indicator on a mag base on the chip guard. Indicate off the round part of the lock handle, which should be snugged just enough to let it slide. If your base point is at or very near the pivot point of the bar, it makes life really easy. Roll the carriage a set number of inches, you will know what the DI reading should be from the taper you want.
It bears checking a couple three times for best results.
All you have to do is loosen the locking handle and the bed clamp, and the lathe acts like there is no TA.