So I broke a single grommet on a relatively new racquet. I was thinking about using grommet tubing. The problem is that I never used this before. Do you just cut and insert? Do you need some of glue to hold it in place? How long will this last? The supposed pro stringer at one the clubs I play at didn't even know what I was talking about and told me just to play without the grommet unless I wanted to replace the whole strip. Thanks for any info.