[gellenb]

I have a Philco 80C that I've rebuilt.  It was in bad shape when I got it, so it never was pre-tested.  I've gone through replacing caps and resistors, coils are good and so on, keeping it the same as what it was without changes.  It doesn't exactly match the schematics, and already had the "gimmicks" done.   Reception "seems" ok, but I expected better, maybe my expectations are a bit too high.  Anyhow, as I go through the alignment all goes well till the last step adjusting the sensitivity.  It seems odd that I can't adjust to a point where the squealing starts.  Don't get me wrong, I don't want the set to be a "squealer", but for tuning purposes, according to the doc's, it should be adjusted to the point just before the squealing starts. 
So for now, I'm just looking to see if anyone has any suggestions before I dig into it again.  Are the instructions for tuning correct that it should squeal, and then adjust it back to stop?  Any thought are appreciated.  Thanks