Just about all the trees do that. Atleast every tree I've been up. I usually keep the cables tight on the bottom of the tree so it fits right at the top. Plus I use a Summit Viper which "adjusts" a little just by the way you position it. I've even, in the past, have gotten most of the way up and needed to adjust. So I made sure I was strapped in tight to the tree. Then I adjusted the seat part of the climber, then once that was good, I adjusted the platform of the climber. This is not recommended (by most people and the manufacturers) because there is a high risk of falling if you don't do it right and carefully. Which is why I seriously make sure I'm strapped into my harness tight and it's secured tight around the tree. If you drop the platform or seat part of climber when you are up there.. Then you are screwed. Guess you'll have to bear hug the tree and pray you don't fall while trying to climb down.