Our HitchHiker has curved shower doors. In the inside of the track there is a plastic block held in by two small screws on the top and bottom track. Remove this block and you will find an enlarged slot that the roller wheels will fit through. Roll the door to the slot and let the rollers come out and continue until the second set of rollers disengage from the slot.
I find getting the doors back in a two-person job. get the top rollers back in the track first and have the helper keep the top rollers in the track as you engage the lower roller. Next, reinstall the plastic blocks.
Ken
Amateur Radio Operator.
2023 Cougar 22MLS, toted with a 2022, F150, 3.5L EcoBoost, Crewcab, Max Tow, FORMER Full Time RVer. Travel with a standard schnauzer and a Timneh African Gray parrot