Hello! Yeah I am trying to figure out how I want the Flexity to work.. because the only way I can make the character change seats is using the fold function.. So currently, to "unlock" the flexity so that it can bend and the trucks can turn, there are mouse controls. go all the way to one side and itll allow movement. then, just leave it, you shouldnt have to lock it (which is why it flings itself off the track for you) unless you need to rerail it. I will try and find a better way in the future, but that is what I got for now