I used the universal capture plate with the predrilled holes and never had any issue. It mounts real easy. It fits over/around the kingpin. What I did was put in place around the kingpin, 2 c-clamps to hold it in place, lined up the edges, clamped it and used the predrilled holes in the adapter plate as my drill guide. I used the 1/4" bit to mark all the holes, removed the plate, and drilled all the way thru from the bottom side up. Pullrite sends all the bolts, washers, and locknuts. It may have taken me 10 minutes start to finish.
Alie & Jim 2009 CarriLite Max1
Volvo Dually Pickup
My keyboard is faster than yours