Fitting new batteries in old trays?

[xjbebop]

I finally bought a new Emaxx this weekend :027:
I was getting it set up to run, almost ready, then I found...
my ep4200 stick packs don't quite fit into the battery trays! :026:

I understand that the newer gen of batteries are slightly larger than the older 1500 - 2400 type cells, which I assume the chassis was designed around.

What clever fixes have you guys come up with for this (aside from a gmaxx chassis and lipo's...)???

I just wanna run stock for awhile first...