Tony, My T42 HMS Manchester languished in the shed for 25 years before finishing it.. and by that time, the plans (which were for the then current vessel) were out of date due to upgrades and such !
Good luck with this, as a kit by a major manufacturer and “only” 2o years old you should have some success. Or if not, try Billings themselves??
Yelhsa. disloxic to the end