Hi Gibbotvr, and welcome to GRiSO ownership..!
I had the same problem as you , 3800 mile bike with patchy service history.
My flatties were shot , just like yours are, and that was with a recall on the originals at 1200miles.
This means that my dlc had worn through in 2600 miles .
I managed to get Fowlers of Bristol to re-open my warranty and procure a "C " (I think) kit, free of charge, which was posted to my home address.
I carried out the rollerisation myself.
Good luck , get it done mate you wont regret it.