I've got kind of an odd issue here. I am replacing my battery cables, and the new clamps I got are too large for the posts on the battery. When fully tightened there is not enough contact to allow the engine to start. I had to shove some stripped 12 gauge wire between the post and the clamp just to get the engine to start. Any suggestions? The clamps are military-style from O'reillys, and the battery is a cheapo from Walmart that came with the Jeep. Replacing the battery is not currently an option...