I am in the process of installing a Greddy Kit. For the front lip, did you install them with just the side screws & double taped the center? I have heard of some people using rivets to re-enforce the lip. Is that needed & did it show? My body shop (www.mobworks.com) is planning to use glue & says that it is stronger than the double tape. I am afraid that it may comeoff. Any suggestions/tips are appreciated.