Yea, www.talkag.com but I'm warning you now. It's as dead and boring as they come. I don't know of very many people that do go to it anymore but it might be worth a try. Deerebines
Al punch below and in the left column under Community, select Forums then John Deere. It is primarily antique talk but I have been seeing some postings recently of late model questions and good responses on the answers. You might not get an answer on an 8000 series but I have seen some questions and answers on the older 4000s.