Anyone have tips on getting the bolts that hold the bumper to the brackets off? Most of the ones I've tried have been hard to start and after starting have just spun without removing the nut. The don't seem to want to seat back into the square holes in the bumper. They could be rounding off either on the bolt or the square hole in the bumper I suppose. Advice?

 

Lots of PB blaster and some heat.