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Sounds puzzling alright.
What you did with the transistor radio was OK. I don't quite know what to think of the results.
On the Philco, I don't know if the generator they specified has a capacitor isolated output or if it is at DC ground. That would effect the grid bias of the first detector tube, I don't know if that would make a difference to the alignment though. Was the radio working before? The tuning meter moving would mean that something was getting through the IF circuits, it usually works off the AGC generated at the 2nd detector, but maybe this radio is different.
Unless you have that frequency counter or another working radio that can pick up the short wave bands, you really don't know what the SG-8 is putting out.
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