OK- so here is what I found after doing your test right.
If i extruded 10mm manually from repetier, it would pull in 10mm from the cold side. Extrude 20, it would pull 20 from the cold side.
Before I did that, I tried using .5 for nozzle size. Made the parts worse, infill further from perimeter. Then I got the bright idea to try .35, yeah it made it better as far as the borders but then I remembered I bought a pack of .4mm drill bits. It fit perfectly into the nozzle.
This is driving me crazy! Everything seems to be right!