W/D Hitches

Look at the Andersen hitch, also. It works extremely well for us.

stevemorris wrote:
...the hitch is an older model(20 yrs or so) where the weight bars slide on the top of the trailer A frame for sway control. we've done almost 50,000 km on this tow combination with no issues except the leveling ...

Sounds to me like it may be a Reese Mini 350 which has now been discontinued and if so would have been underrated for the task at hand anyway as you're likely running somewhere around 450 lbs of gross tongue weight, or should be with a trailer with an estimated GVW of about 3200 lbs. I'd agree though that if your truck is now sagging in the rear when it didn't used to that you need to look into the truck's suspension first before addressing the WD issue. Once you do though consider a Blue Ox Sway Pro with 550 lb spring bars - perfect for your application and should you ever switch trailers to something heavier (or even lighter) all you'd have to replace are the WD spring bars as everything else with the Sway Pro system remains the same regardless of the size / weight of the trailer you're towing.

Seems to me it's not the WD but the truck's suspension. If it was level before for years and now the truck squats then it's the truck.