I as well installed the skid plate, mine doesn't rub... I had some trouble getting the screws in cause I left the front plastic part in but with a little love it went in nicely. The only thing I couldn't get in were the two push clips that hold next to the jack pad... I guess cause I kept the front shield on, (no trimming either) it increased the distance and the clips weren't long enough to grab the other side.
Also I couldn't for the life of me get the diff bolts loose to put on the rear diff plate.. I'm going to try again this week with a can of PB blaster..
All in all the front was easy it actually took me less than an hour to install. Drove around all week-end and no vibration issues......
RULE #1 You got to pay to play!
RULE#2 If you can't Live by rule 1... Don't Mod your car.