Not as obvious here as when you look at it but the reluctor wheel (2 of them) have different gaps around the circumference. The wheel is loose in areas, you can tell the two pieces that had been fitted together have become unattached in areas making the assembly sort of wobbly. we'd sort of been all over the board on what the problem might be. Initially thought perhaps a burned piston. Leakdown was indecisive so we theorized that a head was lifting at higher boost. We knew we would not be sure until we had it down. Good news is that the crank, rods, pistons, and LQ9 block are in good shape. The walls are not scuffed or damaged, pistons look okay and the rods show no sign of contacting anything. Probably good thing we pulled it down when we did.