Was a little concerned about the leaf deformation. My gut is telling me it's where I touched the leaf with my bare hands. But to be safe I have raised the light distance to 20" from 12".
After a bit of research it was either to much wind from the fan or bad soil.
Since swapping the powerful fan for my dual pc case fan in a pringles tin the new leaves appear healthy and correctly formed.
Fingers crossed it's fixed..
Other wise I have a dodgy pot of soil... 🤔😞