The 3D printed tray turned out to be a bust due to the printing method used (wasn't solid, interior was a lattice design) so I ordered a cognito moto shallow electronics tray. I utilized the stock battery box with small rubber spacers under the box mounts, a 1/8 neoprene mat over the top of the battery for added protection then the stock battery box rubber mounts as spacers to raise the box to the proper heigh. I did have to trim the walls of the cognito box down flush with the mounts as they were hitting the seat. I lined the cognito box with more neoprene and put in a usb charger that connects to the battery tender when not in use. Bonus, it also displays the battery voltage when connected. I may add a cargo net style cover for added insurance. This accomplished exactly what I wanted it to, a small secure area to stash pocket items (wallet, phone, keys, etc) while riding. I'd love to hear some feedback and ideas anyone has. Thanks!
As an added double bonus I was able to integrate a mounting point for my 82 Custom tank.