:\ the only thing i can suggest is completely stripping all existing tape, and tape residue and start over from scratch.

• use the rubbing alcohol to clean the dash area and the metal pieces.
• go to home depot and find their industrial strength double sided tape patches and cut new pieces for the trim
• before applying the pieces, heat up the exposed tape with a hairdryer
• apply the hot trim piece to your dash and press down like crazy.

back in the day, i installed a carbon fiber dash kit in my eclipse ... it didn't stick at first, but the hair dryer really made the tape extra sticky.