Not owned this car long and noted that sometimes the tickover was a bit rough, and then it would go away again. I looked on this forum for a solution, and some genius had posted the details of a recall on my car. I rang vw customer service, they checked the vin no and told me that it had not been checked, took it in yesterday and they replaced 3 of the siemens injectors.
Result? easier starting, smoother acceleration, no flat spot in mid range, almost silent tickover
I thank you all!