I guess people don't even read the thread, this has already been discussed.
THE SHREDZ64 ADAPTER DOES NOT WORK WITH TRACKER HERO!!!
If you all wait a few more weeks AmigaManiac.com will be selling the correct, fully-compatible adapter based on Paul Willingham's design. I don't know if it's such a good idea to contact Paul for an adapter anymore since he will probably be busy with the first batch of 50 PIC chips which will be used in the bulk lot of adapters that are being made for AmigaManiac.com.
I really hope someone who already has the correct PS2-CD32 adapter can donate it for use at the games competition at AmiWest, Tracker Hero is a great game to play with a group of people, and if you guys bring your kids along they'll almost certainly know how to play it straight away and hopefully have fun with it too.