[Elecraft] K2/100 question

[K9RT at aol.com]

Recently purchased a nice used K2/100. All seems well but when I use the 
narrow filters on ssb I have to retune up about 700hz on lsb. as well as usb . The 
three narrow filters are all centered on a frequency 700 hz higher.
This is my second K at 2 and must confess I don't recall the first doing this, 
but rarely if ever used it on ssb.
So are the filters aligned correctly, or perhaps set this way for psk or 
another mode?
And is it possible to bring them into alignment by some simple adjustments? 
Don't want to throw anything else out of alignment without some advice.
Thanks for any assistance..
Dick K9RT