why are my LTFTs running near -12 but the STFT is around -2 to 3? 07 vette

I thought I had my 07 corvette dialed in perfect. The last time I ran a log it was staying in the -3 range on the long term trims. Today I drove about 100 miles and it ran great. Got home and thought I would just check it and the long term trims were about -12 or more. That said looking at the data it was running about -2 to -3 on the short term trims. It's like the long term and short term trims don't match up at all. What the heck would be the issue here? I hate this e38 computer.

The LTFT's adjust in a manner to keep the STFT's close to zero.

If nothing in the tune changed, large negative LTFT indicate possible leaky injectors, or leaky FPR.

What fuel are you running...?

Did you change from E00 to E85...?

no just using the e10 gas that I have always used. I was quite shocked how the trims were honestly. Car was running great and was getting 30mpg even with the trims like that

Keep an eye on them over time.