Following up on earlier today (see link below), it was suggested in a local meeting today to try unfolding with SVD without the last bin of data (pTjet = 23 - 30 GeV/c).

https://drupal.star.bnl.gov/STAR/blog/dmawxc/jetcorr-follow-09112018-svd-unfolding-singular-values-and-kreg

Without the last bin, it might be that the unfolding is more stable.  Unfortunately, this doesn't seem to be case.

Following my usual algorithm, I would pick kReg = 9 for the solution.  That solution looks like this:

Now, let's look at the d-vector and singular values:

As before, the components of the d-vector and the singular values drop to 0 after kReg = 10 (the number of nonzero bins of data).  And also as before, the error bars explode past kReg = 10.