Thanks for choosing health care magic for posting your query.
I have gone through your question in detail and I can understand what you are going through.
The plates generally dont move but they can cause pressue over certain areas whch can cause these symptoms. Having had a neurosurgery in the past it would be prudent to do a MRI
scan of the brain ones again.
Nothing wrong in being a bit cautious.
Hope I am able to answer your concerns.
If you have any further query, I would be glad to help you.
In future if you wish to contact me directly, you can use the below mentioned link:
Wish you good health,
Dr. Srikanth Reddy M.D.