Ams supreme

My cafe racer seeds are taking longer than I thought to pop. I have 1 that has a dark green tap root that was exposed but not out of the shell and the other although has plumped up hasn't broke it's seal. I decided to plant into my Coco to help raise temps on the seeds. I also cut up a gal jug and placed it over to help with the germ. I'm not sure if the seeds I got were the best they have all been small and dark seeds. I had one before that I tried but saw the same dark green tap after digging it out of soil 9 days after putting it in.