G'day everyone. I'm doing up an old Stihl 020 avp and the fuel cap insert has disintergrated and I'd have a go at making one but the ipl doesn't show it clearly enough for that. It is the type that fits in from the outside of the cap with a grub screw inside it I think. I can't buy a new fuel cap in Australia for it so I'm in a bit of a bind. Can anyone help with a description or photos to help me out please? Thanks. Brian.