Finally was able to get all of the drawer pulls removed.
A GJ member who owns Viper boxes recommended I use an impact driver and diamond coated bit, but in the end it caused more damage than good. I stripped 4 machine screws using that method, after a failed attempt to try one of my better screwdrivers, a worn out, USA made older stanley philips screwdriver that did nothing but start stripping one of the screws.
Let me just say this, I will only buy high quality tools going forward. I purchased a set of Wera classic screw drivers and tried to use the bigger philips driver that came in the set and it worked just like a driver should, no stripping of the screws and I was able to remove all of the rest of the screws by hand. Some were still tough to get off, but the Wera never failed me. Having the right tool for the job really does make a difference. These Classic drivers work great and feel great in the hand too.
4 stripped screws had to be drilled out, really annoying too since the screws were only 6mm long. Now I have to buy a 4mm x.70 tap to fix two threaded holes in one drawer pull, I was a bit too aggressive(and tired) driliing out the stripped head on the second of the drawer pulls. Removing the drawers made a huge difference too, they come out very nicely. I really like these Viper boxes.
I also noticed something else interesting about the white Viper boxes. The white finish is actually a metallic finish, not just a plain white. There are metallic flakes that are more visible with an LED work light I hadn't noticed before, not sure if these are painted or powder coated.