Dead rabbit v3 and the curious case of the missing peek insulator!?

Not such a curious case because Im almost positive it went down the drain, but it is gone. Does anyone know where I could get a replacement insulator the one that goes around the 510 pin for a dead rabbit v3. I have a wasp nano and a nightmare but neither fits and I don’t wanna shave em down and then those not function please help. I have messaged hell vape but I’m not very enthusiastic about them sending me a replacement!