Printrbot Plus Z Screw Isolator with extra hole

I really liked the design before i changed it. I, however, was not able to take the carriage off of the poles with out unplugging wires. I was uncomfortable unplugging so i went to tinkered and added a hole where you can just slide the piece into place. This remix has worked so well for me. I am not too sure how many other people are still using the machine but if even one person finds this useful that would be pretty sweet.