What size hole do you drill. Let's say the toggle requies a 1/2 inch hole. How much larger do you drill to get the padding and dash cover thru and still fit the toggle back thru. Since the toggles slide in from the back (not the front like the gauges and lights. THEY KEEP PUSHING THE LEATHER BACK OUT OF THE HOLE? I also find if the hole is big enough to fit the toggle thru cleanly, the nut/ring doesn't tighten down properly, It pulls too far into the hole or wrinkles the leather? What's the secret?