My recollection of the routing was a bit faulty. If you can't get the line cleared out, I would pull the stiff drain tube out of the socket where it goes into the side panel down below and ream out the tube with your coax, then do the same at the side panel. Not much below there, you should be able to clean it out from where the tube plugs in. I do recall that it was difficult to get the tube back into the socket, though. You'll probably need to apply some lubrication and perhaps trim it a bit. Here's a picture of the passenger side drain:






--
'96 850 and '83 244 DL both at about 200K; gone but not forgotten '81 245 and '64 Amazon