Right header and image lag when positioning with RES

Hi all

Problem #1:

Working on r/BBUK, where I've added a random sidebar image thingy above the sidebar. Something's bothering me though. Every time you load the page, the header top right and the image load at the very top right before repositioning themselves. This only seems to be a problem when RES is enabled, so I'm sure that's to blame somehow, but I'm not sure how to fix it! (I'm using Chrome if that matters)

Problem #2:

On the search results page, the header bar moves itself down and blocks part of the page. Any way to solve this?

Thanks in advance! :)