It could just the be change in the weather/IATs exacerbating the issue for the closure. The earlier logs had minor closures up there already. On stock turbos, it's probably not even worth the gas to rev it out that high anyway. In terms of actual performance, you'd be better served shifting earlier and dropping back into the meaty part of the rpm band. It's diminishing returns going that high and then you're on the trailing end of things already after a shift from up there.

The trim difference between banks is closer still and not even as high than they were on the previous log, so that's good. Unless you changed the E85 blend, temp also has an impact on trims and they could pick back up when it gets warm again, but looking pretty good for now.