Do you have a pair of stands and a jack?
If so do it yourself.
Use Synta platinum oil and fit a new pick up pipe/gauze. On these engines it's a must.
I Believe these engines suffer from sludge build up because the wrong oil is used at wrong intervals.
Use proper VW oil and change it every 5k.
I wish I'd have picked up a V5 or even better a V64mo instead of the 1.8t. Great engine you have there, and drivetrain.