[Radioroslyn]

I'm ashamed to say I dont understand fully where the plate pin of the IF amp is and I assume you mean the green wire of the (IF) transformer right ? Correct does IF amp mean the amp tube if so could you tell me which one would you mean the 7v7 that the white wire connects to?
and I have a 100pf is that too big , I can get a smaller one

No problem should be a white wire connected to pin 2of the 7V7 that would be the plate pin. 100mmf is fine. The last IF amp, the one with the bad transformer.
Terry