Try calling these guys, Justin is a straight up guy, you can tell him Race Part Solutions sent you. I would bet it is something very simple, if you can get the tranny out and take it to a shop it shouldn't cont nearly as much as what Ford is saying, I would bet it would be a few hours labor and then what ever shaft, clip, lever broke. Look at it this way, it's probably time for a clutch so upgrade that and fix the tranny.
Justin's Performance Center 301 Serendipity Drive Millersville, MD 21108
Phone: 866-JPC-RACE (866-572-7223)
13 V6 Coupe Base MT6
Home built 62mm Turbo Kit
"Old Bo and Luke didn't need no GPS or big old fancy computer cause the one thing those old Duke boys were good at was finding Cooter!"