since i bought my 01' RM250 over a year ago all it does is foul up spark plugs and i've been using a NGK BR8ES spark plug because thats what the owner before me used but when i look at my service manual it said that i should be using a BR8EG spark plug. Now is there any difference in these spark plugs in terms of is the BR8EG a more intense and hotter spark and i know it matters on how my air-fuel screw is at because it does run rich whether i hace it in a 1/2 a turn to 1 1/2 turns and i foul up spark plugs like every 1/2 hour to 1 hour i ride or should i replace my ignition coil and spark plug wire because everytime i swich my spark plug i notice that the boot on the spark plug is shorting out and melting part of the spark plug. Any help would be great.