Texasjack,
As the others said, there are no proofmarks under the panels. If you still feel the need to remove them, you will have to make a screwdriver to fit the screws.You will not be able to buy one.German gunsmiths made their own tools as part of their training.It will be a little "tricky", if the blade is too hard, it may break;if too soft it may twist off.The drillpress trick mentioned above is very good. Also, try tightening them a little first, to break any rust loose. Be careful and if they still don't move, apply a little penetrating oil(too much is not good for the wood,but Ballistol is not bad). Don't be in too much of a hurry,if it takes a week or more, thats better than having to have a new screw made. When they were installed, they were likely "clocked", so they need to go back into the same place.When you get the first one out, look at the end.It will likely be marked,and all the screws on that side will have the same mark.If it is not marked, the ones on the other side should be.The mark will usually be a line filed on the end.In cases where a third is needed (some in a drilling), an "X" is filed into the end.Then it will be just a matter of keeping straight, whish is from the front and which is from the rear.When you put them back in, if the don't line up, try another hole. good luck.
Mike
