Check to see what colour the top of your coolant sensor is, if it is green ( sure its green? do a search as lots of threads on here) its a old one
anyone got a piccy of where the throttle body is?
Don't think it means much more than it was out of alignment.
Might point towards it being dirty?
Always best to take the TB off for a full cleaning, means you can get both sides of the butterfly with the carb cleaner.
Just need to make sure you don't apply pressure to the butterfly (i.e. try to open it) because you'll damage the stepper motor. You can *touch* it but don't push it.
Grab a new TB gasket from the stealers, only a couple of quid.
Gasket Part no: 028129748
The 4 bolts holding the TB to the inlet manifold should be retightened to 10Nm
Job done!