There is nothing wrong in here YZ250H, its all good! Yeah she's very 'different' for sure. It is a rotary disc valve so intake goes through end of crank.So the clutch is on other side as too the flywheel,so you put clutch cover on then another sealed cover to keep electrics dry. Oh, and the motor runs backwards and the gear lever runs through the kickstarter shaft. Riding round my paddock, she feels like a good package. She's weird and wonderful too me!