Just installed a handicare 950 slide used model, not really sure how they work but on a tight budget so did it myself, at first it worked great ran it up and down a few times and all ok I then ran it up on the remote to park it now it will not go down also when I ran it up the last time the slide track didn’t go up with it, I have no errors when I try to run it down on the toggle or remote, any help please ?