I am assuming your packs are assembled in a side by side configuration.
You don't need to buy new bars or cells. I would dissassemble your packs. Get out the hammer and pound down your bars some if they really stick out so they will touch the cells, you don't need massive amounts of clearance that some bars have.
I would buy a deans battery building jig ( $11 bucks or less ) and use it to reassemble your cells. You will get a super tight fit and its easier to get the bars on right.
I was in the same boat as you as the T4 is kind of tight and I had to pound the bars down some. Also, on my SB, the GP3300 cells are so big that you have to have them assembled tightly or they won't fit the holding tray.
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