[Elecraft] K2 display line

[Bill Carpenter]

I took my K2 (5703) to the lake cabin last week and noticed that the display 
has a line that slants down across the top from left to right.  I sit much 
lower in relation to the rig there than here at home so I had not seen it 
before.  At first I thought the display had moved but of course it's held in 
place very well so that wasn't it.  Do I have a problem or is this normal?