I recently purchase a box of O80 Curves for my layout and the quality of these curves is not the same as my O72 curves which I'm upset about and I hope that MTH corrects this problem. I use a 2.5mm drill to drill my holes in the ties. However, if I do this on the O80 curves it will leave very little wall around the screw. The next thing I notice was the gap between the rails is very large compared to the O72 curves. Now I don't mind a little gap to hear clickety clack, but I hear clunk clunk when the train goes by now. Anyone else have this issue, or did I get a bad box of curves?