The system is similar / I think the same as the last trads. There are two prongs that pass into the catch plate as you push it down.
The prongs are not straight the factory bends them and that position (angle & depth) is fixed by a nut. If they rotate they wont fit into the cuo of the catch. Rotated too far they wont release.
From what you say the prongs need winding back to release a longer length. I would take it to the dealer if under warranty. If you decide to losen the prongs yourself please ensure a full rotation given the bent prong