[Arran]

 Those sets are really packed under the chassis, I have two of them, one is a 46-350, the other the Canadian version of same. These sets use a string of miniature battery tubes, along with a 117Z3, and a 3Q5GT which is an octal tube of course. That voltage divider issue is something that I will have to look into, particularly if there are some carbon comp numbers involved, the main dropper seems to be a candohm much like many other portables from that era use. Both of my sets use the larger square IF cans with the trimmers in the top, so no issues with defective silver micas in those types.
Regards
Arran