Spark Plug?

[bubbag]

Hello,
I have switched to 100 low lead w/amsoil 50:1 and my R is finally starting to run good and the plug is okay in color (dark brown/black) but sometimes it is brown and black on one side of the tip or brown/almost white?
Does it mean anything on the ceramic below the tip of the plug as to what color it is there?

Thanks
Bubba

[JTRtrx250r]

Check Robs post at the bottem, good post and might help you understand what he's saying(he has a pic!:cool: )

http://www.exriders.com/vbb/showthread.php?s=&threadid=161807