Does anyone run their middle screw set to anything other then closed? Reason I ask mine would not seal so I thought maybe just needed a new screw and would replace it. Turns out the hole from the water jacket into the pipe is slightly off from the point where the set screw hits so it will not close all the way. Easy fix would be seal the hole and plug the waterjacket with the screw and it would be same as having the screw closed. Other option is fill hole and re-drill (taper too I woul guess?) in the center not that much more work but I have to be spot on when i re-drill the hole or it will be how it is now again......does that make sense or am 'splainin' bad?