[Richard Moore]

I have a radio receiver set that I built way back when I was in the Navy. In trying to do an alignment on it I find the adjustable cores in one of the if transformers and the rf transformer are frozen and I can't turn them. The adjustment slots in the core ends are already somewhat rounded out so a regular alignment tool doesn't fit anymore.

Does anyone have info on how I might free them up without damaging them further?

By the way, they are Philco made and the part numbers are 32-4399-2 (rf) and 32-4240-3 (if) if that is useful info to anyone.

Thanks for any suggestions.

Dick