I dont think its dangerous as such, most mk3's i have seen are the same but the gap did go on mine when i replaced them, i just looked on an old receipt and the ones i got are down as polo top mounts modified. So i dont know if this means there stronger or different in size as i did tell him it was lowered 60mm

Where did you get those from?

GSF lol

I wouldnt actually reccomend them though, i noticed the cap started rising after a few hundred miles, although that was on stiff suspension and rough roads. They are cheap enough but its a massive effort changing them so your better off with VAG ones.

Taking it back to square one, I had the exact same problem and I was so pissed of I took one strut back off to have a look. This was with new VAG mounts. I went to the local scrappies and found an old top mount and measured from the bearing plate to the top edge of the rubber and compared to the new mount , there's approx. 7mm of a differance, the new mount being the shallower. So all's well, it just looks kind of shitty. On the plus side, you're running a few mil. lower for nowt.