MJ seeds usually sprout very easiy when they are kep moist and warmm
I personally germinate all seeds of any kind in ROCKWOOL cubes.... you just get the cubes soaking wet ONCE (proper pH) and the seeds ALWAYS sprout... from Watermelon to Sunflower to whatever..
i just put them in a wet paper towel then put it between two plates and place it somewhere warm. then just wait and keep the towel wet. the seeds should germinate in just a few days max.
get a nail file and sand the edges of your seeds very gently then set them in some root gel and put them back under yor paper towel that might encourage them out