Thx for the comments guys. I did put some backing material underneath the panel to help from flexing... Here's the bad news. I may not get the truck painted till springtime. I've had some unexpected expenses come up over the past couple of days and they are not small. I might still get it into primer and deal with that till spring but I won't know for a few days if that will come to pass. It maybe 95 degrees here today but it will be cooling off soon and the amount of time I have to raise the money for paint is running out. The shop has no form of heat and thats not good...