Question to wax ring in toilet installation

[Andreas W.]

After a crack in the tank of a 50 year old Standard toilet, I decided to spring for a new Kohler product (Elmbrook). I removed the toilet and discovered that the flange is made of ABS and sits on top of the finished floor (vinyl). The flange is a whopping 1/2" thick. The cavity in the toilet is 5/8" high (vertical distance from perimeter to toilet ceiling), meaning there was only 1/8" of space in which the wax ring did its work. I never experienced such a small gap. My question is, would it make sense to slice a standard wax ring in half or do I use the complete ring and hope the best the wax doesn't get squeezed into the water pathway?