Ezgo fouling one spark plug

[trig123]

I check the cylinders with a tool I have.
Most aren't worn much because these engines are tough. In your case I am not sure because someone has been into it before and no telling what you will find. I always like to think positive and yours will be ok.
Here is a picture of how you can check ring gap with a new set of rings to see if they are within specs.
There is an engine manual on this site .
I also found you a coil from a member here. When he finishes his clone install it will be for sale. Not sure of a price yet but he said he would sell it.