Aido, I have an 05 GTI DSG, and occassionally get a lul between 1st and 2nd, but not when driving hard its more when crawling along. If I accelerate even moderately then it shifts perfectly and all the other gears function perfectly.
Steve looking at the ross tech wiki, do you go through and reset all values, and then with vagtech still installed do the test drive as recomended? Also since one of the catergories is cruise could retro fitting a crusie stalk without re-setting the value have an affect?