My rear wiper has lost it's spring (not literally, I do have the spring..)
I finally got round to having a look this morning, and the bar which the end of the spring nearest the splines has just worn/broken away, it's a arrowed here:
It looks like a new arm is needed, the old one is pretty firm on there and I expect I will need to cut if off which seems the norm, but I've soaked it in WD for the time being to see if it helps.
There has been talk of using a Polo rear wiper for an Aero style arm, has anyone done this? Got any pics or links?