You may have noticed that the spine connectors have a tendency to slip out of the track spines. Below are a couple easy modification that you can make to the spine connectors so they will fit securely in the end of the spines. The first section below shows the flex spine connectors and the second section shows the molded to flex connectors. Some things needed: 1 roll of 2 inch Scotch Brand Painters Masking Tape, small screw diver, scissors, tape measure and the spine connectors you want to modify.