Guys,
I performed a complete RF alignment once again.
I used a sig-gen and the SA just as a "receiver" to "see" the LO signal and followed the service manual instructions.
LO was fine in all bands with LO signal higher than the signal by the IF value (452KHz in my case) in all bands but the n. 4 where it was below.
The dials track the sig-gen signal with very low error in all bands.
The ANT and MIX trimcaps of bands 1&2 didn't peak, exactly as before. I had to leave them fully released (lower C) to get the MAX output possible.
During alignment the BS dial knob was fully CW and , I confirm once again, the BS cap had the plates all out (minimum capacity).
The radio performs well in all bands but the lower part of band 1 (<1MHz, as before).
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I decided to leave it alone, I give up.
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Thank you very much for your precious support, guys.
Ciao.
Emanuele (IU1KNR).
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Emanuele Girlando