GE MDS Orbit - Using DF1 - Can't make it work.

I bought these things a year ago and have yet to make them work. We have to use SAF because of topology and nothing we or GE can do makes these work. We have been personally responsible for several of the last couple firmware revisions because SAF wouldn't work over simplex.
I'm just venting mostly - I don't expect anyone here can help, but it would be nice to hear from anyone that actually has these working using the Allen Bradley DF1 protocol especially if they had to jump through some hoops that we haven't thought of.