Sorted.

Apparently after speaking with Jano, the hole in the jet was too small (2.5mm), drilled it to 4.2mm, wound a bit of tension on the actuator and its now purrrrfect!

Jus found another random problem tho, one of the loom wires has rubbed through, arc-d onto the braided turbo oil feed hose and pierced it! Now the back of the engine is covered in oil! Ferkin great! Is there no end to these problems! lol