Dive Rite XT1 first stage refresh

[Screwball]

I bought an XT1/XT2 setup for single tank when I started diving in about 2014. Now that I'm getting into doubles I decided to grab another XT1 for obvious reasons. The new one has a glossy surface coating compared to the matte coating on my old one, and is slightly taller as well. I understand you should have identical regs for doubles so is there any difference internally or performance wise between the old and new? Or is it purely cosmetic?

 

[grf88]

It is best to have similar performing regs but I can think of no reason that they need to be identical although it may make for ease of servicing.