Cool picks Jcart. I noticed on your skid plate those 1.5" washers that are counter sunk into the thicker plate. I had an issue where I kept getting stuck trying to take my p5 off the trailer. After several attempts, I left it stuck in place & looked underneath, & I was getting stuck on those washers. They bent down a little & where getting hung up on the trailer 1/8" metal.
I changed my 4" drop receiver to the 2" which angled the rear of the trailer down, and hammered those washers up a little.
I like that extra thick material you have.
The thicker UHMW is working well so far, been just cringing where I've had it for work running over mechanically brushed (with flail hydro axe) up to 4" stump diameter trees all mashed dried sharp edged and rocks hiding in the grass..... Most certainly the stock skid would have been caved in by now. I countersunk the washers in part to try and get away from your experience and also to use the stock bolts and washers too. The bolts are pretty light duty as I've twisted off two, was lucky with easy out drill on one the other good old vise grips.
Green 2015 P5
ITP 212, 5/2 offset
26x11by12" AMS Slingshots all corners
Blue Sea Mini Add a Battery Kit
Terra 35, Synthetic Line, KFI mount
KFI mount and 66" blade
Custom UHMW skid plate, fender extenders
In the works, stix stoppers (rear), cab enclosure