Per chance, do you still have that 4,75x40 GS Weaver, FC? It would solve my troubles with that Marlin you have in safekeeping, as I like mine well enough.
Alas - 'twas sold years ago. Besides, it's not silver enough for your application.
I do, however, have an extra 3-9 Conquest in the safe, should you want to go that route... Just sayin'...
FC