The throttle blade shaft cracked threw the two screws that secure the throttle blade. The 2 screws and chuck of shaft went into the rear cylinder at 75mph on the interstate. Went wide open throttle, and I hit the kill switch. I haven't opened the engine yet, but I clearly see a screw and the shaft piece laying on top of the rear piston. I plan to open it up on my next time-off schedule, Just preparing for the worst news. I can buy new heads, what I can't buy are jugs and pistons. Does anyone have any of these in their inventory?