Help with Swede 41 scope mount

Find it odd that there is no thread on Swede rifles as they probably outnumber Swiss 10 to one.

Anyway, I am building a "somewhat replica" of a type 41 sniper rifle.
Started with a Mauser Werke M96 (great real walnut), found a bent bolt with perfect headspace. An exact repro mount was bought and fitted with an early Kahles 8x56 which looks a lot like the 4x90 that costs 1000s.

The problem is with the mount. It has opposing windage screws as most original scopes had no windage adjustment. Problem is that the range of windage in the mount is tiny, nothing like a windage adjustable G&H of the same era. The range is limited by the windage screw(s) heads which bottom out in the recess cut for them. As it is about impossible to get the base mounted incorrectly windage wise due to its exact match to the receiver contour, as well as leveling it, I am flummoxed.

Anyone run across this one before ? Only fix I can see is either shimming the mount (ugh) or having the screw head hole(s) milled deeper.

Thanks.

Got the windage issue fixed but the odd mount is hard to keep tight. The single lever is right were it shoud be (from actual photos) but the only thing that holds it is the bolt and nut in front of it. When they designed it, they should have had the lever go "over center" to the front so the bolt would have something to lock up against. Think I'm going to D&T a setscrew in the top of the base to lock it onto the base.