Help! At practice this weekend before the race and after an oil change with mobil 1. Yes, the oil was full. I did a second gear start and when I upshifted to third the bike seized! the skreching noise and all. I coasted the bike to the pits check the oil and kicked it over. It then started and I ran it up the pit and it seized again. This time it feels sticky when kicked over and has no compression. Again it is full of oil. I am thinking the oil pump when bad or a valve stuck, or a ring stuck. anyway I need help. The least I am looking at is a piston and cylinder. Can I get the top end off without pulling the motor out of the frame? The dealer is going to look at it before I touch it to see about Yamaha helping out. I have never heard of one of these doing this. Sorry about the long post but I am bummed.