"THe trailer in tow was 8500# with a tounge weight of 920#. I was within the limits of the hitch and having no difficulties at all. I have towed this trailer with this truck for almost a year totaling well over 2000 miles."

I was within all limits as you can see from above. I just simply wanting to know if anyone else had the same problem with the F-150 hitches, I really didn't think I would have to get into an explanation of how a WD hitch works. I had the chain type WD setup before....it actually put more stress on the hitch than the Equal-i-zer does now. The only reason for the upgrade was for the sway control capability. Just FYI, The factory hitch is rated at 990# TW with WD and 9900# trailer weight. The new hitch that they installed at the dealer is rated the same but is designed differently. Instead of 2 pin holes it only has one. The steel is thicker and the plug is in a different location. It looks like a better hitch overall. The other looked weak, the steel was thin and didn't look like it would handle the weight. The truck and trailer sit in the exact same position as it did with the chain type bars and it tows alot better with the Equal-i-zer.