PS2 Mainboard Schematic Needed or HELP!

I just decided after 7 years to Mod my PS2. I have purchased a Duo3 Utlra Chip at a great price so I can use the old PSX titles on the PS2 [backups].

On the back of the board most mod-chips have 3 soldering points. Well one of the point got accidentally ripped and the lead is gone. The trace line follows under one of the chips. I was wondering if I can wrap a wire around the pin and tap a piece of solder on it to create a new lead. This is why I need a technical schematic on the PS2 GH-019 board front and back side please.