The spray adhesive work for me only because the cabinet was not put together yet and I was able to work with each piece by them self.
I would not try it with the cabinet already assembled.
Thank you, sir! lol...Poor folks got poor ways!
There really isn't much to it. I was looking for my stock pot to make some soup and saw the loaf pans at the back of the cabinet and had a light bulb moment (lol...ironic, huh?).
I set the ballast as high on the mounting brackets as it would go for easier air flow under the ballast itself. Positioned it as far to one side and the end of the pan as I could to leave as much room as possible for the power cords, ignitor and capacitor. Dry fitted the ballast, igniter and capacitor brackets and made my marks for the bolts. Free handed the air holes and cord access and used a half-moon file to file to my hearts content . Your file is your friend! Just as an fyi...Because of the slope of the pans I had to mount the capacitor sideways and it made it a lot easier to cut off the last inch or so of the ballast mounting brackets.
The top was dry fitted with the pc fan and marked. A 1/2" hole, aviator snips, the file, some silicone caulking and bolt holes in the handles was all the top pan needed. Added some quick connects to the fan wires and adapter and...voila!
(The pic's are a mish-mash of the two I put together.)
Like I said, "weren't much to it."
Namaste, mess
This may be of some help in getting the doors lightproofed...
http://www.icmag.com/ic/showthread.php?t=95220