so, the first time I was under the Jeep, I needed to remove the skid plate for access. well, 2 of the 4 bolts holding on the rear skid plate had rusted into the riv-nuts (meaning the bolt rusted into the riv-nut, and spun in the frame), and I had to cut the heads off from the bolts in order to remove it. I will be going past the closest Jeep dealership next week. but before I order the new riv-nuts, I want to know if this is something I can install at home, or do I have to have the dealership install them?