I have a 219 filter in my Omni VI+ and I think that it has too much loss. I do not know if all 219 filters have this much loss or it is just a bad filter. Has anyone tried the Inrad 760 filter that is supposed to replace the 219 250 hz filter? How about the 759 that is a replacement for the 217 500hz filter? Thanks 73 Paul K9OT