I have changed the pressure gauge on the regulator of my Fx Dreamline tact-compact for a Huma and it reads 125 bar when the original Fx read approximately 135/140 bar. It is normal so much difference or I have done something wrong.
I run Sekhmet gauges on both my tank and regulator on my MK2 impact. I like them. way easier to make more exact tuning with them.