[MENTION=2850]Triaxle[/MENTION]
Here's another picture which should show a bit more of the attachment of the press arm to the plough.
http://www.forum4farming.com/forums/showthread.php?t=9132
Let me know if you need more pics of the arm etc, I can take some more if you like.
Thanks [MENTION=2524]CORK[/MENTION]. That's extremely helpfull. Doing lovely work there too