Hi all, new boxster owner here ('99 base). I just sit back and learn, but I did run into the broken tab problem. My solution is not for everyone, but if you work with epoxy, you can make new tabs. I taped up the roll bar with packing tape to protect it from my sloppiness, taped the screen to the roll bar, then built new tabs with epoxy fillet compound. Then I followed with an easy sanding fairing compound followed by black paint. If you're patient, you can get the tabs as nice as you like. Mine is about a one-foot job. LOL, looks good from one foot away. The two leftmost tabs in the photo were built from scratch. Also, I scored the plastic to get some tooth for the fillet compound.
