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Lee,
yes I agree that wire shielding and arrangement can have a great effect on
the tuning clicks. Especially shielding the wires to/from the volume pot
have great effect.

But not on the 7199 kHz birdie and the images of SW broadcast stations in
the 41m band. These are simply inherent to the BITX design and cannot be
improved by filtering, placing caps or wire routing.

But remember the real root cause of the tuning clicks is in the SI5351
library. The VFO signal is briefly interrupted each time the PLL is reset
to a new frequency- this causes surges in the wires and supplylines. The
ultimate cure would be to not reset the PLL each time. Then all the wire
routing, shielding, caps, filtering etc. would no longer be so important.

73 Allard PE1NWL