[Elecraft] Filter set up.

[Mike Kasrich]

Well SN 790 is built no real mechanical issues.  One large inner tooth 
lockwasher was missing and a longer black screw to fix the transistor to 
the bottom cover.

I was performing some of the set up at the end and was having trouble 
setting the bandwith for the filters that were installed.  The menu 
shows the 2.7 filter in FL1.  I have a 250Hz filter in FL4 but when I 
tap 4 to select that slot, vfo a doesnt let me select 250 for the 
bandwidth.  Am I missing something step wise?  Been building for abt 7-8 
hours straight so I may be a bit foggy.

Mike/aj9c