[TenTec] Another Delta II Question

[Bill Acito W1PA]

1. Did all Delta II's need the AGC mod (I.e. did Ten Tec ever change the values to 
shorten the time constant, or are all Delta II AGC circuits the same)?

2. I have one that I am re-furbing that has the audio amp IC go into some sort of thermal 
shutdown (i.e. using the internal speaker, the IC gets very hot, and after a few 
minutes the audio is severely distorted. No issue using an external speaker.)  
Anything weird about the internal speaker? I assume I can swap out a standard 8 ohm 
comm speaker? Access looks like a real pain.

3. Can someone point me to the thread that outlines how to swap put the EL panel 
from behind the LCD (I have googled references to it, but not the actual thread)?

Bill W1PA