TapeMeasure Climber Dropping after Match End

[dirtbikerxz]

We are attempting a tape measure climber system for our regional this week. We are essentially using two 775 pro motors to extend and retract the tape measure. (we are using the tape measure itself to climb).

One major problem we are having is staying up, after the match ends and the power is cut. The weight is too much for the 775 pros and the gearing to hold with no power, and the bot quickly slides back down. What are possible solutions to remedy this?

Thanks in advance