[robo]

take the fly wheel off and check that it is in line with the wood ruff key, if you have not lined it up the key will show damage to the top flat edge. you will need to fit new key if this is the case. if all this is ok hold the crank at the threads and check for up / down movement if there is slight play you will need to open cases up again and replace both main bearings. if you have hit the crank shaft with large blunt object (hammer) on your first removal or not used a fly wheel puller the crank would have suffered damage and will need replacing. hope this helps.