Got the Golden Horizon aluminum bulks fitted to my chassis with new RPM arms. Bolted them in and went to put the axel shafts in and I can't get the set screw in place to mount them to the diff. Anyone else run these and have the same issues? Unbolting them from chassis to install them is an option but that's a pain & in my opinion I shouldn't have to. The groove for the screw should be a couple thou deeper. Just frustrated with some of the aftermarket parts.