I don't think that's the stock bridge. I suspect its a retrofit of a fender bent tin. pics of other Silvertones show different bridges. The bridge looks like it's somewhat misaligned, rather than the neck and pickup.
Perhaps the OP should try http://www.allparts.com/BB-3356-001-Wilkinson-Bass-Bridge_p_596.html
Another option would be to get individual string bridges, space them properly and hide them under a bridge cover.
Perhaps the OP should try http://www.allparts.com/BB-3356-001-Wilkinson-Bass-Bridge_p_596.html
Another option would be to get individual string bridges, space them properly and hide them under a bridge cover.

