There are many
things that you can do IFF you are unaware that they can't
be done. The Wile E. Coyote principle of software development.
I use that principle for my audio amps ...
* Poof *, cough cough ... " Back to the drawing board "
How ever with tube audio, the parts vary so much much of your work
is trial and error. Sure it works but does it fit on the chassis?
Or in my case, I didn;'t realise that many and tried and given up trying
to figure out the HP9100 calculator...
-tony