The small stuff clear coat will fill in nicely. There’s a bunch of ways that the inserts can come out just slightly off. If there is flex in the CNC frame or it is slightly out of square, squares become Trapezoids and circles become ovals. Also the blade sharpness or choice of cutting direction (up or down) can make a difference. To get it perfect, find I have to cut a sample piece with all my insert holes and test them right before I do my playfield. From there I can make slight adjustments in the finishing tolerance.