I would just let the trims do what they want. Its not going to change anything by "fixing" them because all you are going to do is add fuel in the tune so it has to "do less work" in the LTFT. If anything the +16 cruising helps you get a bit of a lean cruise going.
If it isnt broke dont fix it.
No.
06 GXP | 222/227 cam/cartuning turbo kit on 8psi/meth/e85 coilovers/ still on stock trans at 130k