Ahhhh, I see, the hats are moving around! I hadn't noticed, maybe my speaker set-up is wrong.
The L&R mics together sound great with loads of compression, that's the main sound. Then the rear overhead is used for high frequency transients to try and give some presence, and the close mics on the snare and kick just help them cut through when the rest of the mix is brought in...... Just trying to explain the logic behind my method, although obviously it's not working!
As every channel on the drums is central, that would mean the only stereo imaging is coming from the room mics, so I don't understand how the hats would move, unless I was moving a mic or my hats. Is it to do with phasing? Could be that when the snare is hit as the same time as the hat, the close mic on the snare picks up less hat and so they move more towards the right hand room mic?