Quote Originally Posted by Shoggy View Post
No, all testers have it and it is also a regular part that comes with the block.

According to another test from a user here: yes. 5.1 LPM vs. 5.9 LPM

The only fix that we did was to change the size of the laser cut for the bolts since it was a tad too small so it was hard to get the block mounted on the board.

The default o-ring is 22 x 1.5 NBR 70 while the thicker o-ring (always included) is 21.95 x 1.78 NBR 50. The thicker o-ring should be used with care since it will bent the base much more than the small one. It depends a little bit if the thicker o-ring will gain a better cooling performance. Normally the default ring should be the best.
You missed my question

Any update on the full nickel plated HF option?