[Elecraft] Roofing Filter Usage

[pastormg2 at verizon.net]

I purchased a K3 with the standard 2.7 Khz SSB filter plus the 1.8 Khz SSB filter.  I did not purchase a cw filter because I operate very little cw.  But that may change.  The 2.7 is in slot #1 and the 1.8 is in slot #2.  I know that if I push the FILT button that I can switch filters.  But I was experimenting around listening to a weak station that was rather close to a real strong station and when I activated the 1.8 Khz filter I was still getting some carryover from the strong station on the weak station. Are there other controls that I need to use that would enable me to knock out the real strong station so that I could clearly hear the weak station?  I'm sure there is help in the manual but I certainly can't find it.  Any help would be much appreciated. Oh and by the way, I love the radio.  It's like a breath of fresh air compared to my Kenwood TS0480s.  Mark KB3Z