Update,
the last few fill ups where all around 320~350 Miles to a tank, dont remember the number of gallons, but it was no better then before. one trip was almost all highway miles and it was almost 430 miles. that sucks. it used to get right at 600 miles to a tank on highway only.
then, what are the odds, one of the injectors shorted out. so i ended up having to tear into it and replace #5. i decided that while i was in there i might as well adjust the valve lash back to stock.
now we wait and see if there is any improvement.