I'm not sure if this was mentioned in this thread but I just started making my field box from hell yesterday and was unsure about what fuel cell to use because of the discussion about the plastic breaking down in different containers. I tried using a regular glow fuel container laying on it's side with a glow fuel stopper from an unused fuel tank. It's not leaking and it only took 10 minutes to set up. Only problem that I can forsee is refilling will have to be done through the fuel pump which will take a little longer than opening the top of the jug and pouring it in from a fresh bottle.

It also fits in the top compartment without cutting up the tray. I put mine up there with the battery and cermark power panel because I hate getting on my knees to see the display on the panel. It might be a little top heavy that way but it's not that bad.