the day started off good until jrs 2004 kx 85 out of no where gets a hole on the top of the case a liitle smaller than a penny in size in the middle of the case . out of all the bikes i have had and worked on i never seen a hole bust out in the top of the case.didnt take anything apart yet. oil was shooting out of it thats for sure .what in the world could have made the case brake open? geaR ,clutch ? he made it home without any problems. just very strange..hope i can get it welded.