Attachment factory doesn't set sequence
Attachment factory doesn't set sequence

It no longer needs to, the model does this anyway.

Also dryed up the attachment factory a little.

YOTOV-LIMITED/whitehall,hotvulcan/whitehall,robinwhittleton/whitehall,askl56/whitehall,ggoral/whitehall,YOTOV-LIMITED/whitehall,ggoral/whitehall,alphagov/whitehall,hotvulcan/whitehall,robinwhittleton/whitehall,ggoral/whitehall,alphagov/whitehall,askl56/whitehall,alphagov/whitehall,YOTOV-LIMITED/whitehall,hotvulcan/whitehall,hotvulcan/whitehall,alphagov/whitehall,YOTOV-LIMITED/whitehall,ggoral/whitehall,robinwhittleton/whitehall,askl56/whitehall,robinwhittleton/whitehall,askl56/whitehall