The "spot" is where the plug is indexed in the cylinder (meaning that spot is aimed at the exhaust valve). There is a lot of debate if there is any merit taking the trouble to index plugs. The "ideal" place is 180deg opposite the electrode base.
2002 Bandit 1200/ GSXR cams/ 1277 BB Kit/ Holeshot header and can/ 38mm flatslides/ a good head/lotsa hp/lotsa tq- lots of rear tires...
