^^Was gunna say you over tightened the bolts...

I had spyders on my 98 GTP and never broke the tabs. I tried the weather stripping on the underside too. It works for a while, but the best thing to do is make wood wedges and wedge them under the front bumper cover directly under the headlights... Sounds crude but zero bounce.

If anyone knows Adam (1UVAKIND) he did the same thing.

But yeah, op if you googled spyder reviews for our cars you'd see alot of peeps have had the same gripes ever since these things hit the market.

Buyer beware.