viewed lots off other links to this problem but cannot find any usefull information it clonkes when changing from d to r and also excelarating and de excelarating it only started this about a 600miles ago i have about 80k on clock the reer dive shaft has no play in it but have noticed some movement were the drive shaft comes out of the geerbox is their a bearing gone their has been a bit of a wine noise since i was doing donuts on the beech the other month back dif oil level is good running a arb aswell but dont think this is the problem no oil leaking at drive shaft outlet and level off oil in geerbox is ok and i do the greese nipples every other month. any info please