My Series 3 has some play in the front hub, too much end float. I have tried to remove the free wheeling hub to get to the adjusting nut on the drive flange but it wont come off! All 6 bolts have been removed and it comes back about 20mm but wont fully come off. I have tried with it set to 'fixed' and 'free' but no difference. The hub make appears to be made by MAP. Any help really appreciated, particulalry if you know how to do this job or can advise if a manual is avialble for MAP hub units.