Use an allen wrench, there are two screws. Take one at a time out, put some blue lock tight on the threads and tighten the set screw then do the other one. The screws on my Dolphin would come loose until I did mine. Don't use red lock tight, takes 500 deg. F to remove the screws again.
1999 35 ft. Dolphin 5350, F53, Banks System, 5 Stars Tune, Air Lift Air Bags, Koni Shocks, Blue OX TruCenter, TigerTrak track bars F&R, Roadmaster 1-3/4" rear auxiliary sway bar, 2004 F450 Lariat Pickup 6.0 Diesel Crew Cab DRW, 4X4, GVWR 15,000, Front GAWR 6,000, Rear GAWR 11,000, GCWR 26,000,1994 36ft Avion 5er, GVWR 13,700, 2,740 Pin Weight.