Ed, I sold my custom linestage that utilized these tubes, and the buyer did not want the 30-odd extras that I'd garnered, thinking I would keep the piece forever. My bad. My tube guru can fabricate a new one but a bit dear for my holiday purse, and for awhile thereafter. I might check w/ Albert at Space-Tech. Thx for the edification, you wrote exactly what I needed to know. Best, Trip.
