Do I need to re-index my Volume?

Question

I recently installed a brand new HD in my macbook pro.

I did this by cloning the original drive.

Everything (almost) is working fine, but I did give the Volume a different name, it used to be Macintosh HD and now it's Hybrid HD (not sure if this matters).

Ever since using the new drive (two weeks now) spolight doesn't seem to be working properly. It just doesn't find things that are there. Although something's indexed because it does return results (usually mail.app stuff).

Anyone know the reason for this, or how I can fix it?

cheers