Symetry Part Setting Error

Hello, I have met my first main bug. I used to symmetry at 3X symmetry. The structure affected by the symmetry was made of a fuselage block, a nose cone, and a Mage 1 engine. I put the consumption of the Mage 1 at 500% and checked the other ones to make sure they where synchronized. Everything seemed fine. As I tested the rocket, it seemed one Rocket was producing way more than the others, and it ran out faster, meaning it had consumed more. I saved and restared, and the error occurred again. However, when I restarted without saving, and I tested it again (without any changes to the Rocket), the error ceased to occurred and it worked perfectly.