The problem with polycoated CZs is that the frame can't be welded without messing up the finish -- and getting the polycoat off to refinish it is tough. To make matters worse, there's a maganese phosphate (Parkerization) coating under the polycoat, and the surface itself isn't highly polished on the polycoated guns.
If you can't live with the holes, you may end up having the holes filled and the gun hard-chromed or refinished in something fancy. There's a lot of work involved...
(Filling the holes somehow -- tapped and then something screwed into the holes, then shaped/smoothed with a Dremel to match the contours -- and painting the result with matte black auto touch-up paint will make a hard-to-see repair, if the "filling" part is done well.)
I'd probably just grin and shoot what is probably a pretty good-shooting gun.