It is possible to move that flexible joint as well. I don't know about manual transmission cars, but the automatics don't have that much room in between the floor board and transmission. back when my car was running low on air conditioning refrigerant, I had my evaporator freeze up on me, and I had some water come out onto the driver side floor before. from what I can tell though, my car has been involved in a wreck of some sort on the front end, as it has the wrong hood, and the paint on the front clip has deteriorated horribly over time compared to what is still the factory original paint on the rest of the car, so I believe I still have a slow leak. with the package tray off you can see the evaporator, and if you are still having issues after checking out and clearing the drain tube, you may want to check the AC system to see if it is freezing up on you. I hope it is just a plugged evaporator, and a simple fix for you.