Have a slider hitch on my 2015 Chevy 2500 6.5' (Standard box) bed. The 29' 5th wheel has an extended pin box installed as well (how we bought it). Even with the Extended pin, I can't back into our driveway off of our 17' wide road without hitting the window. If I put the slider into maneuver mode, then as I found out, the pin box hits my tailgate. Now it takes me over 5 minutes to back into my driveway with all the adjustments I have to make vs. the 33' travel trailer I had where I just backed in with less issues. I think the cheapest solution to my problem is replacing the extended pin box with a standard one.