Just checking so i get the right chain size. RK have a 520 size oring chain and the shop says it will fit My auzzy 2004 model. Reason why im double checking as had problems getting the right joiner link. Got two 520s from the shop and neither fitted. Mines a 520 V2 both i got were to short to go through for the clip to fit on. Photo of the bent joiner link is the original.