I have an alternate solution, with the Thule-One Key Lock Cylinder # TH450200 you can replace all your existing lock cores and replace them with # TH450200 and are all keyed alike.
Alternatively if you do not want to replace all your locks you can replace some of them with # THKEYN080, lock core # THLOCKN080 and the universal change key # 853-1251.
I am not aware of converting a cylinder by resetting the pins, I'd imagine it'd be easier and more cost affective to just replace the cylinders. view full answer...