Oops, my mistake 4 sure. I meant factory "frame sliders". In this case, I found the bolts along with the shouldered washers, were impossible to get threaded in order to attached the plastic shroud on the slider/support bracket. I simply could not find purchase. It appeared their simply was not enough room for both bolt and washer. Sooo, I skipped the washer and the bolts went in fine. All in all, the whole project, from headlight knob removal, cutting out a few chunks of fairing to buttoning everything up took me 4 hours. I must be slowing down in my old age. BTW, I read somewhere somebody having trouble removing one of their headlight adjuster knobs and I think I know why. While one of mine was attached by a Phillips screw, the other was a Torx of all things...minor supply glictch on the assembly line I guess !