You should hit up Jacob, he's in Colorado too, and running his car in all the high altitude mountains. He has a build thread on here:
https://forums.pelicanparts.com/911-930-turbo-super-charging-forum/853761-its-about-time-finally-have-79-930-a.html
or you can DM him on Instagram,
https://www.instagram.com/jacob.schramm/.
He's running a later 964 turbo WUR part number: 0438140160 that is able to compensate for altitude better some how, which the original 930 wur struggled with at altitude. I picked one up on Ebay a couple years back but have yet to have it overhauled for my 930. He said it was a huge improvement for the altitude variation he was getting from his original WUR. Its possible he has more details in his detailed car thread.
The base of it is much thicker so it has something else going on inside compared to a normal WUR. there is one here, which you can see has a much larger lower section but the price on this one is a bit nuts..
https://www.fuelinjectionproducts.com/products/porsche-911-reman-warm-up-regulator-bosch-0438140160?srsltid=AfmBOoqxxlHhXzh7TgASQ01dgcj8MWn o8B2iutBJ3l_Eha6f-suESUOL
