sounds like those seeds are hardhusks, whenever i get a load of good seeds, i put half straight into germinate, and the other half in a bowl of warm water, some ppl use tea, soak them for bout ten minutes and put them into germinate, also one thing ive noticed, tissue paper germination is over-rated, its hard to keep the right wetness to it, all i do, is put about a half inch of soil in a little pot put in the seeds, and just put a little more soil on top, get it wet enough, and wrap cling film round it for humidity, poke holes in the film, put it on a heatmat (guess u could use a radiator on low,) and wait, then when you get them out, A. there is no need to risk damaging the roots as you leave the dirt on, and B. it makes it alot easier to plant correctly without causing stress.

you mite want to change your germination method, i used to do all my seeds with paper towels and tissue until i used soil and got much better results, (plus, as soon as the paper dries, the seed dies lol)