[Elecraft] 500Hz Filter Offset Question

[Rich]

I just received my 500hz filters from Elecraft.   I guess I assumed they 
were 8 pole, however they are 5 pole.  The web page does not specify 5 
or 8 pole, or I did not navigate the webpage properly.

So now that I have 5 pole filters, I seem to recall that entering the 
offset freq is not required any longer on the K3S, is that true?

Also does a K3 upgraded with K3S features need the offset freq?

I should mention that they are all matched.

Is there a graphic representation of these 5 pole filters available?

Thanks

Rich

K3RWN