plugs?

After successfully getting the cold starting prob sorted (crikey) my bike started fouling the rear cylinder plugs. I commute on the motorway 30 min each way every day. Maybe I am not giving her too much stick, but can anyone tell me why the rear plugs are fouling and not the front? I lose a...

Hi can anyone tell me the size/thread of the meter plugs for my Akrapovic full ti system? :dunno I know the standard are 1/8th bsp but can't find the size for mine. I've got hold of a co meter today and want to set it up for the Ape :thumbup Thanks