Basically this lever controls an arm which goes into a slot which seems to stop the locking mechanism (the fork at the top right and the eyelet in the top left which feeds the bar that runs to the inside snob) from turning at all. The spring that you can see in the photo pulls it down into that slot, but there is nothing which pulls it back out.
I've pulled the right hand door apart and this door locks perfectly inside and out and it doesn't have that lever which pokes into the slot. If if pull the lever back, the door (left hand) works perfectly, but there seems to be nothing that is meant to pull it back.
Is this simply the wrong lock on the door (I think its had new doors at some point), or is there a problem with this lock ? I don't want to go and buy a new lock if I'm going to have the same problem, or if its something I can fix myself. It seems like I could permanently hold the lever back and the locks would work well, but I don't want to bugger it up either ! Douglas Valley have a lock that would work, but like I say, no need, more money for other things !!!

