I have not had any trouble with the screws at all. I'm sorry, are you referring the rust problem these screws have? If so, the reason mine are ok is, I WD-40 everything once in awhile to keep thing quiet. Everyone says how noisy these end links are, but mine are pretty quiet.
Brian, try and move the setting in between the lateral links sometime. It makes a HUGH difference. I had mine set up like your, and when the suspension would re-bound, the sway bar would hit the top of the lateral link. Making some serious clunk sounds. Just a thought...
I like my suspension like I like my women, TIGHT! he-he..