What Thomas Bertilson has said really. I have used the Kodak Xtol times for Neopan 1600 at EI 1600 and didn't find my negs thin. Try a print from your negs. Let us know how it goes. Do you get a sparkling print at say grade 3/3.5?

Unless you have used this combo of Xtol and Neopan 1600 before and are experienced with it then try printing and see what you get.

If I had to make any comment about what you did, I'd say that you should maybe try 8-10 initial agitations which will take more than 10 secs and then at least 3 agitations every 30 seconds. One inversion every 30 secs might not be enough BUT until you do Thomas' tests and then try printing you won't know what changes to make.

pentaxuser