NEVER touch the steel coupler (with the radial holes) when it is cold. If there has been the tiniest leak it is stuck when cold and breaks. It is fragile and needs to be so to not transport heat!
Bob! Screw the steel coupler all the way down.
This "lifts" the block, prevents fan shroud contact and increases teflon pressure (u only want this if you use the I2K. Else the teflon life is reduced, so THEN leave the gap like picture!
Not sure if it's this but here we go:
Hope this helps
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