Just to say, thanks for this guide. You need patience, WD40 or similar and a bit of force. I have managed to get the linkage out (getting the wiper arms off was bad enough - plenty of wiggling and let the lubricant set in) and will work on it later. Both sides are stuck solid as I suspected. Let's hope I can fix it! If not, any suggestions on where to get new/second hand linkage? eBay seems like a good start...but anywhere else?