THE FIELD BOX FROM HELL! aka The Ultimate Field box!
I wish I had a picture to show you how I did mine without chopping it up to much.
Instead of chopping out a whole complete corner I widened the center of the pull out tray and removed the center part of the handle grip so that the bottle sit in the center of the box. I only widened it enough to barley fit over the bottle. The tray would place pressure on the bottle to help hold it in place as it expanded when I pushed it down over the bottle. The tray acted as a support to help hold it in its place as I moved the box around. The tray initially stayed in tact, so I was able to utilize it fully.
I stored my started, charger and paper towels in that area. In the very bottom of my box I stored the fuel, battery and cleaning fluid's.
Hope this helped.
Randy