Hey guys, recently bought an after market rear spoiler (I hate calling it that...) and was wondering a few things. It came with 3M double sided tape but not very much... will this be enough to hold it flush to the car forever? I find it hard to believe that just some tape is adequate to keep a piece stuck to your car forever. Also, no real instructions on where to place the tape to give it the best hold. Anybody done this before on their own? Any suggestions? Thanks!