Windshield Brace

[dalelease]

Hey guys/gals, hoping I could gather some advice on my windshield brace I have fashioned. I got sick of hearing the windshield squeak as it bounced/vibrated back and forth (particularly when I had my top off). I decided I wanted to brace it from my rollcage. My friend helped me weld 2 pieces of square tubing (1 on the driver, 1 on the pass side, 1/2" I believe) onto the roll cage, so it spanned the distance between the rollcage and the top edge of the windshield frame. Sounded like a pretty good idea at the time. Obviously, we only welded the roll cage side, so the windshield could still fold down freely. We also welded a cap on the extending end of the tubing to make a flat surface. I made sure that the end of the tubing was grinded down smoothly to produce a nice resting surface. The result: now my windshield makes even MORE noise, since when I drive, the rollcage kind of sways a little bit from driving and such. It makes a horrible shrieking noise as the end of the square tubing and windshield frame rub together with metal-to-metal contact. I tried buffering it with tape and a couple of other things, but it cut through quickly and was not a permanent solution. What a GREAT idea...lol
My inclination at this point is to add an additional piece to the inside of the square tubing. I 'm thinking if there was a metal plate extending from the side of the tubing a couple of inches with a hole in it, I could use a bolt and anchor it to the windshield frame. That way it wouldn't vibrate freely and cause this horribly dreadful noise.

My two questions are:

1. Does this concept sound like a terribly bad idea for any reason?
2. Would having the rollcage and windshield/frame attached in this manner cause any unforeseen problems?

Thanks for the help!

Dale