[Elecraft] K2 ATU alignment: stumped

[Alva Anderson W5VCJ]

Hello all,

  Hope everyone had a great Christmas! I am building the ATU for the K2, and
all has gone well up to page 16, where we start the alignment. I set the Pwr
for 5.0, VFO for 7100.00, and have rotated the resistors and C55 several
times to "loosen them up". However, when I go to CalN (null) adjustment for
the ATU, the reading is jumping all over the place. It may settle for a
short time on say 011, but the slightest touch on C55 drives it wild -- and
some positions never settle down: the reading may jump from 028 to 000 to
042, ...

  Am I missing something somewhere? I have the Errata where it says you may
get 001 or 002 instead of 000, but when I get near the 000 with say 098, it
will not stay there. It doesn't seem as if it can be adjusted. The solder
joints on the FWD/REV pots and C55 look good, and everything has checked out
to this point. One note: the plug P8/J8 connection is VERY tight, but it
also passed
all checks, as did all the Lx and Cx stuff.

  Anyone know what's up?

Thanks,

73 de Andy W5VCJ