Cutting foam unsuitable locations

The case is of good quality but am disappointed its storage capacity: my boyfriend wanted to throw downright foam to keep only the case because the accessories are not staying. We have a GoPro silver with only additional accessory for a car cup.
After intensive brain digging and changing the foam with scissors I managed to get it all in the same case if the sites are not good at all for what I have stored.
The picture suggests that one can store plenty of accessories inside: this is wrong! That is all for the camera with his basic accessories but difficult to put anything more!