[Elecraft] K1 Low Power on 20M band once ATU is installed...

[N2ZDB at aol.com]

I just built a new K1 and had some problems with the output power. To  make 
a long story short I 
ended up having to lower the values of R5 and  R11...  This brought the 
power levels up on 
the 40 M band from 1.5  to 6.5 Watts and on the 20 M band from 0.5 to 5.5 
Watts. 
 
Figured all was well now until I installed the new ATU....

For some  reason my output power on the 20M band into a 50 Ohm dummy load 
is 
only  around 0.7 Watts now with the ATU installed.  If I remove it - it  
goes  back up to normal!

Any  ideas?

Thanks,

Michael
n2zdb