I am looking for recommendations on an engine rebuilder. I am in Southern California but can ship the engine if needed. This is a track bike for track days only, not into racing...yet. The reason ism y 2009 R6 died during my last track day at AutoClubSpeedway. I felt it loose about 25% of the power and as i pulled into the pit it started smoking out the exhaust. The temperature stayed at around 195F. I took the spark plugs out to check compression and saw damage to the spark plugs from cylinder 1 and 4 so i tore apart the engine and found way more damage. I still dont know what caused this because the cam timing was correct, no valves are bent, and i didnt find any loose pieces in the engine. I bought the bike used about a year ago so i dont know if the tune is correct. I know i will need a new (used) cylinder head and new pistons. But i dont know if the block can be saved. There is some small scratches on the cylinder walls that can just be felt when dragging my finger nail over them. Another option might be looking for a used engine but i havent found one yet and dont know if i would just be getting another engine with problems also. Thanks For the advice in advance.