I’ve welded my adaptor to my hitch that I use for my RV because of two reasons. One is slip and noise, the other is the extra shear forces on the pin bent the pin and start to elongate the pin hole on the trucks receiver. For heavier trailers I won’t use a loose sleeve for this reason.
I welded the sleeve at the front end(dead end not under any stress).
As for a winter front, get the Geno’s one that goes behind the grill. Much nicer in my opinion and it is not in surface contact with any exterior finishes and surfaces that may get scratched up from grit trapped under it over time. As well I don’t like the looks of the OEM ones. Just get the grill quick release kit as well, makes it easier to put it on.
This one? https://www.genosgarage.com/product...raft-winter-front-bug-screen-gg-wfhd10/winter
I think that's the only one listed for an '18 RAM2500 and it seems to be on the outside of the grill.