I recently noticed that my Ultrex doesn't seem to be locking down in place when stowed. If I push the latch bar towards the mount, it will move a bit and then lock. The latch bar is acting like it is in a bind. Is there something I need to lubricate to make this work better? At first I thought that I maybe had to bounce buster cut off too long, but it's doing it even when it's removed.