Is there any top tips when fitting sierra drive shafts to the LSD and through the hubs and bearings. Mine are really tight on the splines when trying to get them through the hubs. They seem to be pushing the hubs apart once they are almost though.

Clean the splines so no gunk in the valleys then if your really stuck
Put drive shaft in the freezer for a couple of days
When I fitted a Mondeo centre shaft bearing a few months back, shaft went in the freezer bearing on the house radiator for 2 days