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We are talking about a Hallicrafters S-85 are we not? The S-85
tunes from 535 Khz to 34Mhz. So, what is this about .5Mhz and 370 and
220 Khz? typo maybe.
Since the higher bands work I assume you aligned the IF. Perhaps
worth just starting there. Feed in 455 Khz. You can feed the antenna
terminals. Adjust using 30% modulation at some reasonable frequency, say
500 Hz. Use the lowest signal strength that gives you noise free audio.
Tune for maximum output keeping the input level as low as possible. This
will prevent a resonant shift due to AVC.
When done go on to the RF alignment. Follow the instructions. The
S-85 starts with the high band and goes down.
I could not find a reference to which image is used on the high
bands but its important to be on the correct one. It is common on these
receivers to align the local oscillator "Below" the signal on the
highest band and "Above" it on the other bands. If you are on the wrong
side the RF will not track and the calibration of the oscillator will be
off. If you find this try the other side.
The position of the peaks on the RF will be affected somewhat by
the dummy load. Its worth using one if you can but reasonable alighment
can be gotten without one.
The IF symmetry depends on the coupling of the IF transformers and
for a fixed bandwidth IF should be close. If its way off you have a bad
transformer but I think more likely have a measurement error. Just peak
the transformers and go on to the RF.
It is amost impossible for you to be getting good signals on the
high bands and nothing on the broadcast band. I measurement error I think.
Start over from the beginning and keep it simple! I think its
possible your test frequencies are way off.
Please report what you find.
Note that on the high bands it may be necessary to rock the tuning
because the RF adjustments may pull the oscillator slightly. Not the
cause of your problem. Also a reason to keep the signal levels as low as
possible.

--
Richard Knoppow
Los Angeles
WB6KBL
SKCC 19998