justpoet: Battery, I mean fuel tank, box looks to be a little over 45mm wide. There is one attachment point that passes a bolt through a motor mount, but you can easily make up for that with a couple nuts or a little standoff.
I think I've irreparably stripped about as many Phillips heads as hex heads, which is a pretty small number. Phillips definitely seem easier to strip though since they don't lock the bit in. I do have a full range of Phillips bits, too, and (usually) use the right one for the job. Another nice thing about hexes is that you can often cheat out-of-the-way screws with ball end bits!
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