When I first installed these. I didn't realize I put in the trans mount super askew. I think doing these right are a little more complicated than people realize. There are a lot of alignment nuances that I think most diyers miss when trying to do these at home.
That being said when I went to do it again the right way, I realized vw put a semi alignment circle I to the unused circle on the amount. This circle should sit in the exact middle of the mount. Mine was preloaded off to one side and caused some issues over time. Also, the engine mount block should be exactly 10mm from the frame with the mount perfectly parallel.