Ok so I went to a garage here in Montreal (Auto Elite) and they installed my rear 20mm H&R spacers..(DRM) and refused to install my front 15 MM DRS saying that they did not want to be responsible for damaging my front wheel bearings. THAT IS ABSURD! I think that they did not have the proper tools for removing the stock studs and didn't know how to do this on an G37x(S). Anyone here have the instructions for this install. Are there any issues or problems to watch out for? Any help here would be appreciated...THX!