Drop me a PM with yoru details and I have said chunk of s*** you can have (Repro).
You are better off simply using a vernier caliper in depth gauge mode against the side of the blade bed indexing off of the protectors.
You can then set however many thou you want and simply butt the thing against the caliper probe and tighten the retaining screw.
Or you can use a brass drift and a hammer and beat the poor thiong into submission.
I use method A with a small tool that Ovenpaa made for me that indexes off of the protector and makes adjustments a piece of pee. It is simply held in place and does not require any force and...unlike many clamps, does not stay in place so you can shoot, adjust, shoot very quickly.
I know I am a heretic and there are many on here who will want me boiled in oil for suggesting this....well we used to behead people once but have moved on a bit
In my opinion any way I can limit damage to what is already an old rifle while speeding the process up is a winner.