I am going to wait it out and see how the bronze oillite bushings do. Not as good an option as needle or ball bearings, but time will tell. Like you, if I have to go back in, I'll opt for ball bearings.
I dunno, I think there is a good chance the oillite bushings will work well. If you notice the biggest difference in design between the HRX and all the other models is that the hrx actually gets a dust seal on BOTH sidesof the bushing.
Regarding ATF, I know it’s the wrong stuff, but the “right stuff” chipped a gear so I didn’t really care. Never had a problem with ATF and I’ve got more hours with ATF than with the right stuff.... sooo I’m not recommending it... just what I use.