Just to clear things up a little. Ball Pythons do not actually produce sperm plugs. What people call sperm plugs on ball pythons is actually a hemipenal shed. Just plane old shed skin from the hemipenes. Just because a BP is producing "plugs" doesnt mean he will get the job done. Every male BP we have had has had "plugs" by 300g. An 07 is for sure sheding his hemipenes you may just be missing them. I see them on our males almost every time they are poped.