Emanuele,? you can’t get away with this without doing a post-mortem for the benefit of? many many others that might go down your road starting where you started. [Smiley-face here]

The coax has nothing to do with your original alignment problems? Right ?

In the event that the trimmers are far off the needed values, just maybe C3 and C4 ?interact a bit, lulling them to a small false peak [somehow] and trapping you there.? Early on I was trying to encourage you to set the trimmers near max and start again.

You had test/alignment gear and could not get it “unstuck”? but would have pre-tuned it properly had it not been for that coax?

Now that it is aligned, how is the sensitivity? And how does the V1-V2 get coupled. Are we down to the invisible gimmick in the band switch?

?