By looking at the pickups, I saw that both was not correctly glued and one was not installable due to the epoxy fall into the pickup hole. Pitbull has sent me 2 pickups to replace them and I recieved it very quickly!

I still have to bolt the neck, find the right place for the bridge and test the electronics and we will be good to start to stain the bass.
Thank you very much Pitbull!