[Elecraft] K1 Transmitter Output Problem

[Ricky Robbins]

Building a K1, thought I was on the home stretch, but I've hit a snag.
 I was on the transmitter alignment section, page 19 of the K-4
additional manual, and all went well for 10 Mhz and 7 Mhz.  I switched
to 21 Mhz and didn't get the two watts out, but got P0.1 (like the
first steps of the Alignment and Test, Part II on page 46 of the K-1
manual when the filter board is not installed).  It didn't vary, just
P0.1.

I checked the "out" menu setting and it had 2.0 watts.  I switched
bands back to 7 Mhz, and now it only has 0.1 Watt output for tune no
matter the "out" menu setting; the same for 10 Mhz.  All frequencies
appear to be within the allowed band (didn't move the VFO knob from
the starting mid position during this time).

Left it to start typing this question, wanted to go back and look at
exactly what the display read and all bands but 21 Mhz would now
output okay -- 21 Mhz still just P0.1.  I went ahead and completed the
tune-up, skipping 21 Mhz (but starting with the 21 Mhz caps for 14
Mhz) -- wanted to try the radio out and will be using it on 40 meters
for now.

Finished the work (speaker, etc) and hooked the rig up through a tuner
to a dipole tossed into a couple of trees and, for the first time in
26 years for me, made a contact (my code skills, even with some
practice recently, are woefully rusty).  After the QSO I did some
cleanup and rearranging (included unplugging the K1), then brought it
back up to try for a second contact; back to no output, if I go into
tune I get P0.1 on screen, if I try and transmit, no power out.

Any insight would be appreciated; probably (hopefully) something
simple I'm missing.  First contact was a thrill, hope to get the
second before another 26 years go by.  :)

Thanks for any help,

Rick
N4YQP