this problem need to clear it as soon as possible
i think T2 armor part dkp can set higher and allow in with T1
it will encourage dkp burn and prevent raider just save dkp and not upgrade their gear
T1 part =12 dkp
T2 part =15 dkp (according to dkp web atm)
the dkp range is too small and it will cause a problem (main class save their dkp and wait T2 part)
i suggest T2 part need to set 15> 18dkp at least
then it will make a 6 dkp points difference compare with T1 and T2
of course raider should allow use in with T1 when they call T2 armor (if allow it just cost 18-12 =6 dkp)