[Elecraft] High Power TX gain failure

[Dohn Smythe]

Just putting the finishing touches on my K3/100 build.  What a treat.  I loved puttin this thing together so far.  I got thru the 5 watt Tx gain just dandy.

I CANNOT get her to perform the High power gain calibration.  I start at 160 meters as instructed.  Whether by manual means or by using the K3 utility, as soon as I hit tune (maybe a second later) the whole shootin match shuts down.  The swr must go up too high.

I've got it tapped into an MFJ-250 versaload.  The old gallon can and the oil level is up there.  It just isn't calibrating.  It doesn't like something when it gets a whif of 50 watts.  I tried about 20 watts into a 20 watt 
DL-1.  Same thing.  Something just isn't right.

Any suggestions where to start looking?  I have a feeling it's something simple.  Who knows?

73
Dohn Smythe  N8EWY