I've further bulletproofed my steering with the following modification:
I pressed out the POS "bushings" that come with the K factory aluminum steering slider and made my own bushings out of leaded bronze bushing material (McMaster Carr P/N 8971K311, $4.55/ft). The diameter of the holes in the steering slider is 5.0 mm (.1969"). I turned the 1/4" bronze rod down to .1975", which is a good press fit, then drilled a 2.9 mm dia hole through the bushing (drill bit P/N 30565A248, $1.09/ea) and finished by reaming a 3.0 mm dia hole through it (reamer P/N 8851A14, $8.24/ea).
I then pressed the bushing into the steering slider and reamed the I.D. a final time as the press fit will pinch the I.D. slightly.
I've been running this mod for three weeks and it hasn't loosened up yet. Normally, I would have to retighten the steering rack after every weekend of running to keep the steering tight and it was a losing battle. This mod is well worth the cost of the materials and is much, much more durable than those weak a$$ pieces of crap that came with it. I also made 2 additional sets of bushings for future use if the originals begin to get sloppy.
Note: when adjusting the steering rack you don't want it as tight as you do with the standard slider or it will bind. Just loosen the adjustable front steering guide rod at both ends, slide the slider over to one end, tighten it, then slide it over to the other end and tighten it. No tensioning of the rods necessary; you can't get it wrong!