Regarding the 330K resistors, do you see any problems using a DPDT toggle
1. connecting 330K to negative rail and pin 4 of tube to pin 2
2. connecting 330K to pin 1 of tube and pin 4 of tube to pin 1
thanks
Chris
[Non-text portions of this message have been removed]
1. connecting 330K to negative rail and pin 4 of tube to pin 2
2. connecting 330K to pin 1 of tube and pin 4 of tube to pin 1
thanks
Chris
[Non-text portions of this message have been removed]