Have you been to the Irvine Shade & Door website? If not, check them out. They are the manufacturer of the slow rise shades on our 2019 34RL2. They have videos showing how to adjust them.
Separately, there are excellent videos on You Tube on how to replace the shades in a Cedar Creek. They worked for us when we recently had to replace a shade roller that had broken. It wasn't that bad.
2019 Cedar Creek 34RL2 w/disc brakes
2017 GMC 3500 D/A, DRW, 40Gal Aux Tank
Retired Dept of Navy: Navy/USMC Flt Test Engineer