IMHO, a spacer under the pivot is very helpful in changing clutch engagement but too much and the pedal is too high. I don't know the VW specs offhand but generally speaking, there should be about 1/4"-1/2" of pedal freeplay where there is no resistance, then you can feel the pedal resistance build, then you can feel the pressure plate diaphragm release. I haven't experimented with the G60/VR6 in a mk4 but in my mk3 the pedal height was unchanged. In the linked post there's someone who said pedal engagement was higher after doing a g60/VR6 clutch. If I were you I'd get a new TDI clutch lever and see if it's livable and change the lever type only if experiencing problems.