Why not call your distributor? Part of the reason for their existence is to provide after-sale support and eliminate the the time and frustration of sourcing parts for yourself, isn't it?
(Serious questions, not trying to be a smart ass or flippant, but it seems straightforward to me. I haven't been in the hobby all that long so perhaps I am naive, but I always assumed I'd just contact whatever distro sold me the game when replacement parts or tech assistance beyond my aptitude is needed.)