I had (still am really) huge issues lifting mine.  Wrong size spring sent, incomplete "kit" sent, dealer put them on the wrong way round etc  

I now have a lifted front & bags at the rear, whilst a friend manufactures some spacers (as mentioned above  :) )
Don't forget to get ext
ended brake lines too, oh and the cars computer doesn't like it at all, kept coming up with fault codes, which only a dealer can switch off (permantely)  :doh: