How to tune each FT Cell ?

[SS-1500]

I took a long ride while monitoring the LTFT’s. What I noticed was when going from FT Cell to FT Cell the LTFT’s were all over the place. They all appeared to be negative, although a few FT Cell’s were not too bad, -1.X or – 2.X. The rest of the FT cells were -16 to -19. How do I tune for certain FT Cell’s without altering others ?