I work for Oreilly's. Its amazing the stuff we don't stock... like the egr gasket for a sbc, but we do stock the block off plate which does not come with a gasket (flattened mtn dew can to the rescue). Anyway, back to Andy's issue. Ya smack the thing til it pops out the back side. Then, as stated, seat the new one through the hole and use washers or a larger nut or something to pull the stud up into the splines. I'm sure you know this part already but it helps to turn the lugnut backwards so you don't fight the tapered seat of it. We sell a special tool for installing lug studs but the washer method works the exact same and it is about 20 bucks cheaper.