Well those L/C networks are tuned circuits.? If you can't achieve proper resonance then either the signal is not getting to/from them or there is some fault with them.? Check the coil wiring.? Compare to the other band coils.? You should see similar construction.? Make sure the coils aren't open.? Make sure the caps aren't shorted (the mica or polymer dielectric isn't damaged).? You may have to electrically isolate (lift one side) of these components in order to measure but be careful.? It's interesting that you are getting at least reasonable performance under these conditions.
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Maybe before unsoldering anything you could measure the RF signal at the input or output of V1.? As you adjust the appropriate cap you should see the signal there change quite a bit.?
Now this may sound silly, but make sure you are adjusting the correct cap(s) for the band!? Maybe there's a mistake in the manual?? Verify the caps you are adjusting are the ones in-circuit by looking at the band switch wafers.
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Nick
