We have about the same setup and had to buy the extension before we could leave the dealership (we were living in our Montana so had to move everything over, including the bikes) before we could leave Florida for Western New York. Have not welded the extension, but did buy the clamp assy offered by CW to take the play out of the setup.
Getting ready to put everything back in and on as by next month we'll be heading South again.Edited by: mhs4771
Michelle & Ann
2018 Chevy 3500HD Crew Cab High Country DRW, D/A, 2016 RW39MB, Dual ACs, Auto Level, Auto Sat Dish, Stack W/D, King Sleep #, 17.5" Sailuns w/Disc, MORryde IS & Pin, Comfort Ride Hitch, 5.5 Onan, Res Fridge & Induction Cook Top