Ive been having issues with my brew pumps. Ive got 3 MKII pumps on a 3 vessel HERMS setup. Two of the 25kW guys on the HLT and LMT. And Ive got the 65kw on the BK for whirlpool / chilling / transfer. I never had an issue when they were set up horizontal, but I re-designed the setup and running...