Has anyone tried adding side take-down screws through the forearm of the stock into the action take-down block? I am considering this possibility as a means to stabilize the front/ back rock that the single screw has. I would drill and tap a hole perpendicular to, and on the same plane as the V-block screws, as close to the action as possible to create a three point method of securing the action/barrel to stock. I would also use flathead hex screws, just about long enough to reach the V-block screws, countersunk through small brass pillars to minimumize obtrusivness.
I think this would also provide some side to side tunability by tightening/losening apposing screws similar to windage adjusting scope mounts.