Regulated fill undo

If you over ride the 2,900psi reg you should upgrade everything else like the air line & fitting perhaps. Thet are rated for 3,000psi use and we would hope have no issue at a full 4,500 but the 4,500psi standard is 6,000psi hose & such.
Watching the rebuild vedio for a ninja reg would explain what not to do ( what you want).

John