I have just spoken to the garage and i think my car is FINALLY fixed
Drum roll...
They have changed the plugs and put a new number four coilpack on, cleared the fault codes, drove it and that was all fine, so the number one coilpack saying it was running too lean must have been because number four was gone
The actuator was wound in too much and so they have put that back to standard, thank you all for knowing it was that and thank you flash as you were the one that told me mine was wound in although i didnt realise it could actually cause so many problems and IIRC its been like that since i got the car last year?
I originally thought it was the MAF after me and spaniels had unplugged it on Saturday and it ran better, i had told SEAT this but they said it wasnt that and guess what...wait for it...its my MAF!
So after a VERY stressful few weeks i think i may finally have my car back but i dont think i can give her the present yet as it looks like im going to be buying a new MAF tomorrow as SEAT wont do it on Warranty unless they see it and confirm its that but they told me it wasnt that on Tuesday so not sure on that one?
Oh well at least its probably sorted