So I climbed for the first time today. I have bad knees and going down is hard so really like the idea of the rappel down. I have a madrock and it was ok. I stopped to practice taking sticks off on the way down. When I went to keep moving down the tree I could not get the madrock to release again. No matter how hard I pulled the release lever it wouldn’t budge. I put a stick back on and as soon as I released tension I could keep going down. I’m not a small dude (250) but it shouldn’t lock up like that. Using canyon elite rope. Any ideas?