Cubase 7 Mediabay I barely hear my kick drums samples

On Cubase 7 in mediabay I can barely hear most of my kick drums now. Before I started the project I could hear every external sample normal. I’v added some instrument tracks from halion and sounds work fine. I added groove agent and almost all of my external kick and 808 samples are so low you can barely hear them. Some of my claps and snares are the same way. I clicked rescan and still I have the same problem. Has anyone ran into this problem? I hoping I can fix this issue with out started the project over.