Riding around on thoses plugs for another hour isnt gonna do you any good for doing a plug chop. What you need to do is warm the bike up using THOSE plugs..... When its fully warm put 2 BRAND new plugs in. The instant you start you need to aim it down the road and go 1st -6th gear holding it wide open the whole way. As soon as youve hit top end you need to pull in the clutch and shut the motor down and coast to a stop. Then put in your 2 plugs you warmed the bike up on and go chop your new plugs.