Took me about 3 hours but i think i could do it in 2 next time. Just a tip to anyone attempting it for the first time. When you but all the new bearings back in the hub and put the hub back on the shaft make sure the outer spacer is in place and keep it there otherwise the needle bearing will drop out of the carrier and you will have great fun trying to get them back in place without striping it all back down!
Cheers all
G