Plastic came stained with some weird substance, noticeable up close. Followed everyone's advice of cleaning the area with alcohol and using adhesive promoter, corners lifted in minutes. Removed all the tip and tried again, it's important you get tape on every corner up to the edge to make sure none of them lift. Now to see if they will stand the test of time. Going to spray them with plasti dip as the stains and scratches are quite annoying when looking at it. Overall content with the purchase but was hoping for better.