I'm another in agreement with the new helmet idea.

Also, remember all those out there that over time UV rays and stuff break down that helmet wonder foam, and periodically the standards change. Helmets are relatively inexpensive protection, and if you have one that is older than say,
-your refrigerator
-your senior citizen cat
-the box of stuff in the basement you never opened when you moved ....

you get the idea - maybe it is ok to get a new one. In my case, my old helmet met all three criteria, so I got a new one shortly after getting the new bike.

-T