Those are ok to drill with, but for full PTs I would suggest using 65-84. I feel like the more recent ones are more difficult and so you won’t be able to fully gage your scores if you just use 41-50.
There will be a study group to BR PT 41 tomorrow at 7 pm eastern time. If you would like to join please let me know so that I can add you to our Skype study group.