[Elecraft] High SWR into Dummy load

[DBellW6AQ at aol.com]

Hi, I just finished putting together my 2nd K3,  downloading all the 
firmware, etc., and find that while everything seems to work  fine, my SWR is 
astronomical -- like 15 to 1 after the antenna tuner has looked  for a good 
match, and that's into a 50 ohm Elecraft dummy load.
 
This is a K3-10, with KAT3, KDVR3, KXV3A, KIO3,  KUSB.
 
Before I tear it apart again, I'm just wondering  if there's something 
obvious that I'm overlooking.
 
Thanks in advance for any  suggestions.
 
73, Dave