ahhh your right im thinking of the normal pedistool.

Also the recirculating loop.. The amount of times the water passes though the blocks must equal the time it passes though the radiators. When you split it up like that, you'll get a temp gradiant working inside your res.

Basically its okey to have more flow in your radiator loop, but your other paralell loop should not have more flow, because then your shortening the water time spent @ radiator.

Does this make sense?