[Elecraft] Filter bandwidth

[Gary Smith]

I have the , 6K AM, 2.8K, 1K & .250K filters

Position:
(1) 13K
(2) 6K
(3) 2.8K
(4) 1K
(5) .250K

When I adjust the width in the FM mode; under the XFIL it shows fil1 
but N/A to the right when I look for the bandwidth

In the AM mode under Xfil it shows:
FL1 BW 5.00 to 3.20 
It then jumps to FL2 BW 3.0 to 1.45
It then jumps to FL3 BW 1.35
(I do have FL1, 2 & 3 engaged under AM)

In the SSB mode under XFIL it shows: (ESSB enabled)
FL2 BW 4.00 to 2.90
It jumps to FL3 BW 2.8 to .15

In the SSB mode under XFIL it shows: 
FL3 BW 2.8 to 1.10
FL4 BW 1 to .30
FL5 BW .25 to .05

CW reads as I'd expect but the AM filter BW does not show 6 (as the 
2.8 CW shows 2.8)

The AM mode with the 13K filter shows BW 5 and when the 6K am filter 
is engaged the widest it shows is 3.00

Most curious to me is the 13K filter in FM as there is no BW reading 
just a N/A and it's effect in AM seems to be a BW of 5.00

Are these the expected BW for AM & should the FM show N/A?

Thanks

Gary
KA1J