I used 4140 prehard for the bushings and chrome plated 4140 prehard for the pins. I cut the welds on the pins in the lathe to remove the retainers from the old pins and welded them on the new ones. Every thing got sandblasted, the big stuff got done out in the yard with the pressure pot. The tanks are bolted to the frame. The seam sealer between the frame and tanks was coming loose and the was some rust in between I wanted to get cleaned out. 4 big jack stands and a couple of lengths of 2 inch pipe got it up high enough to roll the trailer under it, then blocked it up between the trailer and frame and let the stands down until it was sitting on the trailer. The trailer is only about 3 feet wide by 5 feet long. No matter how hard you try, the rim paint is gonna get some scrapes. After the tire is on I put some wedges between the tire and rim and touch up the paint then wait a day to air up the tires and seat the beads.