[carlin]

Hi Mate,

TBH i dont think the Afterun oil would of caused this issue.
I've used afterun oil for years never had problem doing seals in.

Sounds to me that the o-rings needs replacing.
If the rings have slight wear on them then they will need replacing.
Most needles have two little black o-rings on them, if you look closely on some show signs of wear like grazing against them or little bits of rubber threads.

This will be why your needles are moving, might help using some gasket sealant when you replace the o-rings also round the carb it will stop any air leaks also hold you needles little bit firmer too.

Hope this helps