The VZ forum doesnt get a lot of traffic, so you may have to post this in the build it yourself forum. I wish I could help you but I have no idea on the material. Maybe contact cz-usa or bonesteel arms (I think obi wan (user name), the owner may still post here. I know he is active on theakfiles) and ask them? I think I recall a lot of Canadians having problems with the "gremlin" some years ago, so maybe try the canadian gun nutz forum???