Impact MKII Huma regulator.

5 bar is not really creep, it's likely changes in temperature and/or atmospheric pressure. I have the same regulator in both of my Crowns, it only creeps on the rare occasions that I set them up at 180bar, where it will jump a little over 190. I have one of the extra-high Huma refs ready to install if it does start to creep in my 700mm Crown at lower pressures, but so far so good 👍