I talked to a dealer, nearest to me was 50 miles that was still with Agco and the parts woman there set me up with name and password.  Actually had pretty good luck by giving her my part numbers needed.  She has in addition to Agco a company that has leftover parts from various dealers old inventory.  Was able to obtain a couple of old discontinued parts from them.  Still wish that we could get prices and actual availability ahead of time as it consumes a bit of time to procur.