I pretty much do this for a permanent side job. If you can let me know about the details of what you started with and what you used, maybe we can get this fixed for you.
First off what did you mold the screen's bezel into? Did you mold it into like a Honda or metra kit?
2nd off, what did you use to bond the two pieces together? What steps did you take.
From the looks of it, it is built up heavy on either side. I would not give up on this as it is a great location for the PC, since it is tucked down below nicely.
If you can't work it out, I will be more then happy to discuss how I can do it for you.