Magnum 318 info
I know this is somewhat off topic and the OP is done with it, but ran across a possible option this morning. Says 47/48RE, and while the cases and such might be different, I don't think the controls are.
Anteater
I sent a question in asking if it would work for a 42/46RE, will post back when I get a response.
BTW, yes it is a little expensive, but not much more than the PCS option above.