i managed to strip the old rack down, it looks like corrosion had set in and the bush at the passenger side had worn away allowing slop in the rack.
it was quite simple to take apart though.
1st take the adjuster mech out of the back of the rack held on with two bolts, it is sprung loaded so be prepared to catch the bits.
2nd take the 2 screws out of the pinion assembly and pull hard, it will come out but the top bearing is a tight fit.
3rd slide the rack out of either end
like i said mine was well overdue for a change.http://s1382.photobucket.com/user/james ... rip%20down