To everyone that sent a reply on something to check, Thanks!!
It took me a week to get through all the suggestions. Still not operating.
I was able to get a Drake repair person to come here and take a look at it and he said there was definately something wrong and he needed to take it to his shop and check it out more thoughouly. So that is where this issue is at right now. Waiting to hear back from him.
Was it Jeff, WA8SAJ? If so, you're in good hands.
But, one of my original questions did not get answered.
Is there a way to check the 3-500Z tubes to see if one or both is bad??
Best test is in the amplifier. You can operate one tube at a time for testing purposes. But of course the amplifier has to actually "work" to be an effective test bed.