1950 Philharmonic 8200 Audio Issues

[vortalexfan]

Greetings everyone, last year as you may recall I had bought and went through the tedius process of electrically restoring a Philharmonic branded Meck TV which I got it working but am still having some issues with the Video IF alighment yet, but that's for another time, the real reason I'm posting is because my Philharmonic/Meck TV is having some audio problems, for some reason when ever I try to turn the Video IF Alignment screws my screwdriver slips out of the slot and hits the chassis.

Well I've had two times where that's happened to me and its taken out my audio section by somehow shorting out or blowing the 1st and 2nd sections of the 6T8 tube which is part of the Audio Section of the TV (part of it functions as the Audio Frequency Amp Stage) and I've lost the original Meck Branded 6T8
tube this way and a NOS RCA Branded 6T8 tube this way.

I checked all of the connections underneath around the 6T8 tube socket to see if there is anything around that area and the Video IF Trimmers that could be causing the short out to happen, and there isn't from what i can see. So I don't know what's going on.

Anyone have any ideas as to why my 6T8 tubes are going out prematurely when my screwdriver hits the top of the chassis of this TV?

Any help in this regard would be appreciated as I don't have very many 6T8 tubes left in my stash.