I am about to mount my 22 yo LE NA6 dash and I realize how I may be able to reinforce the the back of the plastic and lessen the cracking problem of these NA dashes. The one that came out of my 95 broke in 3 places. I am thinking of laying a layer of fiberglass behind it. Is this a good idea or has someone did this already? Or would it just promote further vulnerability to cracking? Any suggestions?