There are a lot of new production tubes (cheaper way to experiment than NOS) which will impart a different tone than the JJ802's, which BTW I suspect could be the cause of your impression of a mid range bloat. I used them in a couple of different amps and ultimately chose a different tube. They do have a mid-range emphasis I think. Although I don't use them, I did try some EH's and I found them fairly linear with good clarity. I do not recall any mid-range emphasis. You should hear a difference - if you don't then perhaps you should focus on other possibilities. If you do you can consider refining your search for an even better tube.
