Has anyone gone this route?

I took out the rivets and removed the stock metal backing. I then cut some thin acrylic (lexan? can't remember) to the same shape as the old metal lightning bolt backing, drilled a small hole a the bottom... and basically fastened the lightning bolt plastic, lexan and 906 socket back together with a small bolt/nut. This allows the 906 bulb to shine through the lightning bolt plastic.

The problem I'm running into is that the old metal backing was solid and allowed for no flex. The lexan allows for flex and I had a ball hit the target hard enough that it flexed back and shattered a 906 bulb all over the PF. Any thoughts on how to stiffen the setup and remove the flex, without compromising the transparency?? I thought about using a small bit of glue gun to adhere the 906 bulb to the lexan. I thought perhaps that way any flex would move the entire assembly together and prevent bulb shattering.

Thoughts?