I have a freshly rebuilt lsv with a gsr head. It was running fine before I took it was rebuilt, I went from an rs shell to a gsr shell. I haven’t been able to make it crank but it has power all the way around, does anyone know that my problem could be? (Sorry if I put this in the wrong section I’m new) if you people need me to be more specific let me know and I’ll try to answer thanks