I was my understanding that reading plugs takes a little practice. Like you need to run pretty much WOT for a mile then cut the motor... Like get on the highway, and when you see "rest area, one mile" drop it into 3rd and go, then kill the motor and coast to a stop and then pull the hot plugs out of the hot motor... Watch your knuckles

Benny Black & Silver '02 Too many mods to list Not enough miles ridden