A shim cut from a credit card can be placed between stock and action at the 12 o'clock position. Using a laser bore sighter makes it easy. Or shoot it. Shims can moved/added to bring the comb to where you need it. A little epoxy will fill out the "bedding" nicely.

Mark Begich, Joaquin Jackson, and Heller resistance... Three huge reasons to worry about the NRA.