I doubt that many were duds. They probably rotted, especially since you had a humidity dome on them. For whatever reason, the paper towel method isn't working for you. I never liked that method myself, but I know a lot of people use it and swear by it. On your next batch, just try this method...
1. ) For your medium, use either Miracle Grow Seed Starting Mix or Fox Farm Light Warrior. These are sterile potting mixes and are made for germinating seeds, so there is no chance of them getting burnt. Don't be scared of Miracle Grow if you see sale on it, just make sure its the Seed Starting Mix. Don't use anything else until they're at least one month old.
2. ) Wet the medium really good before you start. I like to use one gallon grow bags, but you can use anything you want as long as it has drainage holes.
3. ) Next, soak your seeds for 5 minutes using room temperature water. I use tap, but if you feel better go ahead and use bottle, it doesn't really matter. Don't pH or add any additives like Superthrive. Keep it simple.
4. ) Sow the seeds one half inch deep (or roughly three times the length of the seed). Pinch the soil closed and give it a good misting from a spray bottle, but be sure it's a very fine mist. Its only to seal the hole. You don't want to push the seed further down.
5. ) Put it under your lights and set your timer. I set mine to 18/6, but 24hr is fine too. The reason why I do this is because the lights give just enough heat to encourage early sprouting and when they do sprout, they get light immedately when they most need it. Don't use a dome. That just encourages mold and early rotting. Don't use a heating pad either because sometimes they get to hot and honestly, it's a waste of money. You don't need it.
6. ) In three days they should sprout, but it's not uncommon for them to take 4-5 days. However, I don't wait longer then five days. That night if any still haven't popped up, carefully take a toothpick and pull back the soil just enough to make sure the seedling gets exposed to some light. Sometimes the medium will clump up a tiny bit and be to heavy for the seedling to push through it. Other times it's just a weakling and needs a bit of TLC.
Try this. It works.