Hi, FreeSurfer experts

I am sorry to bother again, but it seems that my color bar issue is still not solved. I was told last time that the reason for the minimal values in the color bar not properly shown  is probably because their values were too small. However, when I display two other overlay files (see attached), I still notice that the minimal values are not properly shown in the color bar either. Is there any function in the overlay display that I am missing to have this mismatched color bar?

Many thanks in advance! Longchuan