Yes, only way to find out is to try.
When you go to unlock w/ the defogger repair paint, carefully scrutinize your gaps - you already tried unlocking with a kit, and maybe they're still filled, but to be safe I would use tape to mask off the bridges again, and run a line of superglue down the unmasked middle over the pits to fill them right. After about 30 seconds, pull the tape off.
If you do that, let it dry for at least 30 minutes, preferably an hour.
Then mask off each bridge individually and paint them 1 at a time. Let the defogger paint set for about 10 seconds, then pull the tape. Let it dry for maybe 2 minutes for each bridge, it doesn't take long. Then you can tape over the painted bridges to mask off unpainted ones.