[HomeBrew] Homebrew amp question (link to pix)

[brewerj@squared.com]

I got a HB amp from a friend here locally, and its a fantastic
piece of homebrew art. Unfortunately, although it came
with cables and  the PS (the heath HP-24) it did NOT
come with any docs (or meter settings!)

How would you deal with the fact that there's two relatively
fragile amp tubes, and no guide to interpreting meter readings,
etc?

The link is:

http://www.old-radios.com/amp/amp.html

Thanks!
John K5MO