If the vinegar/hot water flushing were to remove some trapped solder or other junk from the rad it could definitely mess up the swissflow or your Storm's performance. What I do is cut my loop to size with the wb, replace the wb with an inline filter, and then fill and run coolant through the loop with inline filter for 24 hours. That should clean out any particulates. Then I drain into a clean bucket, replace the wb, mount it to CPU and fire it up (after a leak test). A UV lamp and some dye can cut the leak testing time to a minimum btw
