I'll tell you what I do. THen let the masses tell me how I'm doing it wrong. I pull the stem out, and let all the air out (on the bike if need be). THen I unseat the bead all the way around the bead with my thumb. Then I spray WD40 or some other crappy lubricant (walmart cheap stuff) all around the entire circumfrence of the bead. Then I reinstall the stem, air up until it all slides in place (50 psi or so usually). Then let it down to 25 or so, and ride. it. The trick is to lube the ENTIRE bead al the way around, and to do that, you have to undo the bead all the way around.