My friend as a bit of a moment at the track this week. His MC21 decided to lock up on him going into the fastest corner of the track and he managed to stay on it much to everyones amazement.
We got the engine apart today and it has nipped up the front cylinder but the back cylinder is fine.....any sugesstions of what may have cause this or anything that they are known for??
Any help would be great! The bike was on
injection but will be converted to the far better 
pre-mix now this has happen.