Bias Mod installed in a MESA Express

In this (long) video, I install a bias pot in a MESA Express 5:25 so it can run any set of tubes at a reasonable idle.
I do apologize for the length of the video as well as the graininess of some of the clips. I don't have a great camera... yet!
Please note: What is presented here covers what I did to purchase, install and use this item. You should check your own local codes and consult a professional prior to using any item demonstrated in this video.