[Elecraft] KAT2: Can't Get Bridge Null Adjustment (C55) Below 012 mV

[Michael Linden]

I'm performing the Bridge Null Adjustment (C55) on my KAT2, but can't
get it below 012. It is clear when adjusting C55 that I _AM_ centered
in the middle of a "dip". However, I can only get the value to go down
to 012. Per the manual, I've checked T1's windings and their continuity
and have checked the continuity and arrangement of the cable wires (J7
and J8) -- I don't see any problems.

Is a minimum value of 012 "good enough", or do I need to look more
closely at the SWR bridge components?

How might the operation of the KAT2 be affected by this "higher than
normal" value?

Thanks,
Michael N9BDF
K2 #4137