ISO S1 RB25 Valve Keeper

[Largekid]

Somehow from the time I dissasembled my head, to today when the shop was finishing installing my new goodies, we have lost/misplaced 1 of the halves of valve stem keeper. I don't wanna have to buy a whole set when I only need half of one valve's worth. I'm hoping someone has one they are willing to part with. Or if anyone knows another motor that shares these? I've found that its a 6mm Stem with a 6° retaining bump. Any help is greatly appreciated!