Equal-I-zer Hitch issues

After doing of research on Weight Distribution hitches to replace my older Eaz Lift one and decided to go with the Equal-I-zer 4 point sway control hitch. I pull a Rockwood Mini Lite 2109s weight roughly 5200 pounds loaded. Had the hitch installed by a dealer who carries the brand. It tows Beautifully compared to my last hitch, but I am having trouble getting the spring bars away from the L brackets without a lot of effort, to the point of pulling a muscle. I have raised/lowered jack zumpteen times trying to find a balance to ease the tension sometimes to no avail. Now, I am a women and Have always had a lot of arm strength,but these bars are beyond my ability to pull or push in or out, even using the adapter bar. Today I was able to move one out to remove it after a lot of tugging and brute strength, the other one refused to budge no matter how I adjusted the jack height. Was ready to take a sledgehammer to it, but unhitched my truck and pulled it forward and off. I’ve returned to the dealer who finds no problem on their level surface but campgrounds aren’r Smooth as we know. I have around 400 miles on the hitch now. Is it possible it was torqued too tight. I know they have to be tight, but, and yes it’s lubed. Anybody else have this issue. I might be hitch hunting again.