I did find kits for 4th gen 2ws & 4ws but only 5th gen kit for 2ws - $120 plus shipping from Poland so quite pricey
viewtopic.php?f=63&p=404888#p404888
So I have had another look at alternatives and I have bought one of these aftermarket bolts - It says it is a camber adjustment bolt and fits 4th and 5th gens.
https://www.ebay.co.uk/itm/404301899967 ... R7yOy8_vYg
Once it arrives I will be able to compare it to the 4th and 5th gen ones and let you know
