Sorry to hear that Nobby and SteveP are having problems with their DSG 'boxes
I can't offer much in the way of help, but mine was having a few issues , but I had a full DSG service done on mine last year and since then it has been okay. Since then I have had the Quaife fitted and another DSG service carried out.
Have either of you carried out a DSG service yet?
I've been in some other DSG cars that have had the odd clunky change, but not heard of any actually failing because of them yet. I've also been in the Porsche pdk equipped car and even that has it's "odd" moments.
If you work out how many changes in gears your DSG car does and then see how many times you get the "clunky" change, maybe it is a sign your box does need a service. Most engines idle a little rougher coming up to a service, so possibly the same can be attributed to the DSG box
My car's DSG service is roughly every 10k, so perhaps a modified car should be serviced on par with the engine oil?