I still don't understand it, there is no lever on the right or left side to lock it, and both sides appear to have torsion springs just no lever to lock it, I know what your talking about because I live in an RV park and have looked at the newer rollers and they do have latches on the right side. That's why I am confused. the roller I have has no name on it, just a F for front and R for rear on the caps that mount into the arms, you can turn these and feel tension separate from each other, which leads me to believe they are separate springs, there is just no locking Mechanism. Could it be an older style or some other way to lock it? Or does it just not lock?
Thanks for replying