I'd flash it again or disconnect the battery and let the computer relearn the trims again. I know I did that after I saw my LTFT's spike to 7-8 at wot but at idle they were around .7-3.2 I disconnected the battery for 30 minutes and this time planned a little session by the highway right next to my house. From my house exit to the next exit was 2 miles. So in the beginning I drove the access road where I would be at a dead stop at the light and do some gradual 0 to 50's and cruise to the next light. I'd turnaround at the light and do the same going back. I did this like 4 times. Next I would accelerate onto the highway and get up to 75 and cruise at that speed. I would wait get off two exits down so I could get a little cruise time. I'd take the turnaround and do it gain. Doing this my LTFT's have drop to 0-0.7 at idle and it may go up to 3.5 at the most during wot, but will return to 0.
At least that is what I did and it seemed to help with the LTFT's.