Bought new 2018 F350 Diesel dually with Heavy Duty Towing pkg. 3 inch receiver with sleeves. Bent a locking hitch pin rated at 10,000# , Stainless steel Master Lock, using 2 inch sleeve and shank with WDH. If I buy one of these 3 inch shanks from weigh safe, alumium, and 8 inch drop, will I need to use the WDH ? Tag trailer is only 6,000 # loaded. Three inch receiver is a pain when all my shanks are two inch.