hi guys for some reason my ski stopped dead in the water i was doing 30mph and the impellor just stopped??? i have now found the my drive shaft has come out the impellor? if i look under the ski i can see the drivshaft is about 1.5inch from sitting in the impellor i have sorted the mounts but i cant see whats causing the shortage? could there be a problem at the engine end were it goes into the flywheel? all help would be good thanks