I did another test and 4-5 is still slipping.
2-3 3-4 are perfect but 4-5 is just not having it. Here's the log Log 3-4 4-5.hpl
I also logged the PCS pressure when it was making that noise and during the time it makes the noise PCS2 goes to 296 then 0 then back to 296. You can see it in the beginning of this log #2 (1).hpl. On an older log I see the same behavior, but its so strange how all of this just suddenly occurs after not driving the car for a month.
So my trans builder suggested I put a stock trans tune on the car and try it out. I did and it's still slipping.
The noise has progressively gotten worse as well so looks like something is really messed up for whatever reason.
Going to take the trans out and tear it apart to see what is going on.