You guys probably get a million questions like this, but I think I've exhausted all my other options.

I know that the limit for sc_selmap.pac is 1.14mb, and the one that I have is sitting at an easy 1.13. Whenever I change any of the pictures (including names), the size shoots up to ~2.3mb. I've tried all the tips and tricks (well, only indexing and posterizing), and have gotten my replacement images down to ~one half the size of the originals. But the size still goes up. What am I doing wrong? Should I just drop it?