There's quite a lot been written about these on this forum. So long as the grip end is still tight on the blade you did OK but the attrition rate of these in service because of this was tremendous. All it really needs is stripping. bead blasting phosphating and painting. That's all we used to do. BDLin SC can do that to UK
MoD standards
The scabbard was the standard No5 bayonet one and qute cheap, available on ebay. The frog should be post war