[Wilryn]

I have a 51-1733 and would like to do an AM alignment. This is an AM/FM console radio and I have the equipment for AM alignment but do not have an oscilloscope or sweep generator for FM so I was going to do AM only. The FM portion is working and I am concerned that if I align the AM side will that change the FM alignment. Also The cores of the IF transformers are often stuck or very difficult to turn and I am concerned of breaking the core when I try to adjust it. Is it advisable to drop some sewing machine oil in the IF transformer holes top and bottom?
Will this oil or WD40 cause alignment problems in the future. Is there a danger of the cores breaking if nothing is applied in the holes. I have a wood stick which fits in the wide slotted core which appears to be a fired clay material as well as a vtvm and signal generator.
Thank you for any help you can give me.