[TenTec] Corsair II Passband Tunning Question.

[OTAKEBI at aol.com]

Still learning about this radio and have a question.
I have noticed that when I set the Mode Switch to SSB-N the Passband Tuning 
Control works in Xtal positions 3 and 2 but causes no change on Xtal position 3.
If I place the Mode Switch in CW Passband Tuning Control works on Xtal 
positions 1 and 3 but causes no change on Xtal position 2.
The Band Pass Filter Control works in all Xtal position in SSB-N and CW.
I have the 1.8 SSB filter and the 500 and 250 hz CW filters installed in the 
Xtal slots on the PBT board.
Is this normal behavior for the Corsair II or is something wrong?
Thanks for all replies.
Dan N4VET