I have purchased a complete new Al-Ko pneumatic jockey wheel assembly today and returned the old wheel for ( hopefully ) a warranty replacement.
I will eventually report whether it is a better option than the original supplied one.
Al-Ko appear to be a difficult firm to deal with.I asked at the dealers if when they replace the wheel if they ( Al-Ko ) could send it direct to my home address,as after all they have to send it somewhere.
The reply was no,Al-Ko only supply direct to the dealers,so I will have to make an 80 mile round trip to collect it.
Seems a strange way to do business in these straitened times,no bending just a little bit to help the customer.