Torque Flex Axals

I have them and my 25' travel trailer rides like it is on rails. Once, I left a half filled soda can on the kitchen counter top. I logged about 75 miles and it was still in the same spot. The Torflex axles tend to make a lower riding aspect to a trailer. They are also not as good bearing load over poor surfaces like back roads and logging trails as conventional spring suspension. My Starcraft is 44 yrs old and the rubber portions of the axles are still together and not cracking. I do have shock absorbers, too.