Yep, it seems to happen from time to time. If it doesn't stay in the first time, just keep flipping it and putting it back it, it will eventually work. I haven't had mine come out in about year now. I originally removed mine when I did my body color change, and had know idea it would be so tricky to get back in, lol.
2002 Super Black 5 Speed 4x4
AC Shackles/UCAs, 2" BL, 33x10.5" BFG ATs on Desert Runners, ARB front bumper, Skid Row rear bumper, Calmini IAB, AC HD TRAs, Bandit 4x4 idler arm bushings, Bilsteins, K&N CAI, Magnaflow muffler, Doug Thorley Headers, some audio stuff, backup camera. Shovel Mount