Thanks, Rabbit. That is "Glück im Unglück" (roughly, "luck when you are unlucky") A bolt on neck allows you to solve a multitude of problems. If the Holes are in the wrong place, you can simply re-drill to put them in the right place. fill the old holes with a dowel. You'll see were at least two of the holes were, but only on the back. With the neck in the proper place if the fingerboard covers any visible gap, you may not need to do anything else. If it does show, you may want to put a piece in so you don't see the gap. You'll be able to see it, but it may just look like part of the neck assembly.
I wonder if MoSch has the same bridge as yours, Rabbit? After seeing you post, I looked at a pic of the kit and the bridge there looks different...more like a fender bridge. It also does not look like the miserable three point bridge that came with my ESB-4 kit or with the T-bird kits...which is good. MoSch did you use a different bridge than the kit?
In any case, if the bridge is too high, you should be able to correct with a shim. I make mine with pieces of veneer, but you can also buy them or make them out of other stuff.