[Arran]

Now with connecting the antenna to the grid cap, do I go directly from the antenna connection to a grid cap, or all of them? I haven't checked the transformers yet as it is doing the same thing is was the last time it was turned on and that was around 1970. If I get a chance I'll check the transformers. Unfortunately this thing has been worked on before.

 Connect an antenna wire directly to each grid cap from the last #24 tube ahead of the #27 detector tube to the first one after the antenna coil. You don't have to remove the grid cap leads from the grid caps either, the grid is the signal input to each RF amplifier tube so it's a quick way of telling you where the defective RF amplifier stage is, that is if the audio amplifier itself is working
Regards
Arran