I found germination of these to be quite good. I had a pod I got locally but procrastinated too long to extract the seed (pod turning brown). When I finally got them out, it was pretty nasty to try to clean the seeds off, with a slimy, snotty pulp that smelled like bad clams that did not want to come off the seeds. Despite this, I got very high germination.
I had corresponded with a guy in Central America about these & they supposedly do very well in wet areas, so he plants his mocambo in parts of his farm not well suited to cacao. I am easing my first plants into full sun (here in HI) now, in a wetter part of my property.
John