Really.
Most seeds that are ripe DO germinate... hard-husks or older seeds can take up to 2 weeks!
Your temps should be in the high 70s or low 80s if you can guarantee mold-free conditions. Cool temps slow germ; high temps can kill seeds or cause them to rot.
Patience. It's likely to happen, just give it a couple more days using your trusted technique... I've played with some seeds from commercial brick and had some take a full 2 weeks to germ...