I was just talking with my buddy Dan this morning, and he's getting ready to replace his WFCO power center with a Progressive Dynamics PD4045 like many of us have.
He pointed out a warning towards the bottom of Progressive Dynamics website (http://www.progressivedyn.com/index.html) warning of counterfeit knock-offs being sold on Amazon and a few other places. BE SURE YOU ARE GETTING WHAT YOU PAY FOR!! Do your research and make sure your source is legitimate, or you may be getting a power center that was refurbished in China (I'm assuming) with garbage components.
Here's a fake one on Amazon, being sold by "Progressive International".... http://www.amazon.com/Progressive-Dynam ... B002XRU6FM