Nice Upgrade there Michael , I like it , easy to do and expandable in the future if you want to add another water-block and more radiators. I had the same problem on a triple rad I had on a custom h2o loop , that pc was on my garage and I accumulated dust for a year and forgot about cleaning the rad until I started having bsod with cpu at stock , it was much worse than yours , fully cover in dust from top to bottom and no air would pass thru the triple rad , we better start cleaning our radiators more often bro