i am experiencing the same issue with my 2014 Fusion, namely rear center seat belt locking when the 60% seat is folded down. I removed the T50 bolt to free, release belt and was able raise seat but it locked up again as soon as I lifted the handle to lower the seat. I even tried latching the center belt into the buckle as suggest on U-Tube but it made it worse / tighter to lift the seat back up to get to the bolt. I noticed when the seat back is latched in the full upright position, the belt is free to go in or out (does not lock). As soon as i lift up on the handle to lower the seat back and pulled on the seat belt, it locks immediately, preventing the belt from coming out further.
I will bring it to a local dealer next week to see what they say / recommend. BTW, I am a retired Ford manufacturing engineer. Thanks.
