The annual number on the tombstone is wrong with Feng Shui. Can't the orientation be related?

The annual number on the tombstone is not related to Feng Shui. Can't the orientation be related? Mr. Feng Shui looked at it, should you change a tombstone, can you change it? What should I do? Because my parents' tombstones have fallen this month! Hope to give pointers? Can you not change the original tombstone?