Here is the story. My son was riding in the field, when it stalled. He was able to kick it a couple of times, then it would not budge. Checked the decompression lever, valves, everything on the top end. Then proceeded to remove the right case. When I got to the water pump impeller, the motor would turn over when I tried removed it (I thought the motor had froze up). Ok, so I removed the impeller and removed the case. Then removed the clutch basket and the kick starter still wouldn't budge. Removed the kick starter assembly and reinstalled it and it works fine with no binding and all of the gears look great in the right side. Now, here is the baffling part. I can individually turn every gear in any direction, but once I place the clutch basket on and "connect" all of the gears, it won't budge. Like I said, there are no bad areas, broken teeth, worn spots or anything odd. Just when I place that clutch basket in there, you can't turn it over. Does anybody have any ideas on where to look or anything that I may be overlooking???