I bought my daughter a TPS Catalyst fp12c (dark blue/white) used from an auction site. Bat is 31/21 and looks brand new. The bat ended up being too heavy for her. My oldest daughter used to have the baby blue version and liked it. I let her take batting practice with this one and it had a totally different sound. Sounded almost like a loud metallic sound and had slightly more vibration than the earlier model. Someone told me this is normal for this bat. Anyone have any experience with it? Distance seemed fine. I was gonna trade it or sell it but not gonna bother if something is wrong with it.