Well after many, many years of not worrying about narrow filters I'm now converted. I never used to believe in putting the extra filtering available for transceivers but after finally chasing up a narrow CW filter for the FT1000MP I would never ever not think about the extra filtering. This evening I heard stations that you could never hear without one. I have now also placed one in the FT857D as well.
So happy days of CW now with lots less QRM and QRN.
73 & 77 de Michael VK2CCW
Michael VK2CCW