[Hallicrafters] R-45/ARR-7 Questions

[Joe Connor]

I just picked up a pretty nice R-45/ARR-7 (the airborne SX-28). It came with the PP-32 power supply. Thankfully, a prior owner replaced the power xformer so the set can operate on 60 cycle power. With a little tinkering, the set now works pretty well. 
 
I have some questions that I hope you can answer:
 
1. From what I've read, it's a good idea to bypass V-12 (6AB7), the radiation suppression tube. How do I go about bypassing it?
 
2. Interestingly, most of the bypass caps are .0082 mfd, not .01 mfd. Are these mica caps or paper caps? If they're mica, I'll probably leave them alone. 
 
3. The audio output (6V6) and 1st audio (6SQ7) each have a 20 mfd bypass cap. I'll be damned if I can find them. Does anyone know where they are located.
 
4. I know this is probably a needle in the haystack, but might anyone have a front-panel cover for the scanning mechanism?
 
5. Is there anything else that I should watch out for?
 
With this set, I got some paperwork that shows how good we have it today with the Internet. The fellow who owned this set in the '60s apparently tried desperately to find a manual for it. I have the letters that Hallicrafters and the ARRL wrote to him politely stating that they couldn't help. Now, we click on Bama and there's a manual on our computer screen. It's pretty amazing, when you step back and think about it.
 
As always, thank you for your help.
 
                                        Joe Connor