Need NonMopar Tranny Advice...........
Was it a NEW or a REBUILT transmission?
I assumed from your post that it was a used low mileage transmission. I didn't think to ask.
If it was new from Ford then any Ford dealer should be able to handle the warranty. If it was rebuilt by a chain then they may have a shop in the area you are in.
I will try to call a transmission builder I know and see what he has to say after I find out new or rebuilt.