[Elecraft] KPA100 unable to get a low null for SWR cal

[Michael via Elecraft]

Thank you to Don W3FPR who solved my problem!
 
I could not get the swr null lower than 200 mV.
 
Provided trim cap C1 was brown and did not have the minimum  capacitance
required.  I used a Murata green trimmer cap which now allows me to go  
down to 
7.5 mV and the SWR shown on all bands into a dummy load it 1.0:1.
 
The replacement cap from Elecraft is part number E540012 (5 pF to 15 pF  
white body) which should be used at C1.
 
Michael n2zdb