Thanks Andy. I was really originally just trying to figure out what Robin meant by “having the OT and PT be rotated 90 degrees”, since you could do that on different axes.
I wound up mounting the OT on L brackets, which was the other silent position through headphones and much easier to do. The brackets only required me to drill one hole in the chassis.
Right now I have been playing the amp for about a month, and it is fantastic. I absolutely love it. It is dead quiet. As soon as the weather warms up a bit more I will glue the tolex to the cabinet, and when I disassemble it I will post pictures of the OT here. (And I’ll post shots of the amp once I have it finished.)
Thanks for all your help Andy, & Robin!