Alright, I'll see what I can do.
Go to an open area and accelerate wide open throttle, holding it pinned, to 5th or 6th gear. Once in that gear, still holding the throttle pinned, kill the motor and roll to a stop. Pull the plugs.
What your looking for on the plug is a dark brown to almost black color on the base ring (the outer ring at the end of the plug. Your also looking for the color to go halfway up the ground strap and then lighten a little out to the end of the plug.
Most people do plug chops, I've even done quite a few, but I've learned that I can usually tell just about as much by looking at the base ring and the ground strap without chopping the plug and without having to ride all the back to the shop to chop it. I'll run two or three runs and check the plugs three times to make sure the readings are consistent then rejet as needed.
Rejet as follows:
1.) After the WOT runs, adjust your main jets to obtain the necessary color. Check the color several tiimes to ensure consistent readings.
2.) After adjusting the mains, adjust needle clip to eliminate any hesitation, or bogging at mid-throttle. Keep in mind, adjusting the needle can effect the main slightly. Several clips are equal to about half a main size.
3.) Once your needle is responding good, adjust your pilot for smooth idle and off idle response. Good rule of thumb is, if you can cold start without choke, chances are your pilot is lean, if you need the choke to keep it idling or start when warm, then you pilot is a little lean.
Note - Make only one change at a time. If you make several changes, then you might not know what caused what. It can be time consuming, but patience pays off.
Following those guidelines should get you to a properly running banshee.
Hope this helps.
Also, the BansheeHQ FAQ section has some decent info regarding jetting.