They'll replace the cover if you don't add one? That's interesting. Thanks! I might just try that.
What I've done so far is drop the resolution and size of the original cover and map. The problem, I think, is mostly the map I added. It's fairly low resolution though at 2.4mb. Anyway, like I said before, the weird thing is that even dropping down mb of my file causes almost no change after Amazon transfers it (0.6 to 0.59. for a file reduced in half! That's bizarre).
But I'm gonna see if the system takes what I sent and price drops it as is. Otherwise I might really muck up the system. I changed around the back matter and I fear if I keep altering the files before it updates I'm really going to mess up the AI.
A third option is to compress the file further. Anyone ever done that? I'm worried it could cause some sort of unforeseen problem for readers.