Hello chris if you take the metal plate that is bolted to the gearbox bell housing right next to the sump then look up at the sump with a light you should see several bolts you have missed when all the bolts are undone you may need to put a piece of wood against the sump then hit the wood slightly with a hammer this should loosen your sump allowing you to remove it.
hope this helps if not let me know and i,ll have another think for you.
Richard
rbtrans@hotmail.com
Richard
September 2005