[Texasrocker]

Best to replace all those old vibrators with new s.s. types always. I keep a few of the old mechanical type vibrators here, ( with cases removed), for initial test after radios are recapped 1st. The points in the vibrators are always "flaky" at best, and sometimes need abit of help getting started, even with clean contacts.
No wonder all the older vehicles dash-boards were made of thicker-steel! You could give em a good "thump" with your hand, and keep the radio playing!