I just picked up a HB 1588 for $50, complete with egg turner and instructions! The lady said she'd only used it a couple of times, than moved to a cabinet incubator. Don't know how old it is, probably a few years, but I sure hope it works. I have 2 4-Hers hoping to hatch eggs and I was wondering how I could spend the $160+ for a new setup. So, how do I test this thing? Other than plugging it in an listening to the fan and turner motor, I mean. Do I just pop some fertilized eggs in there for a test run? Any add-ons I should consider? We're hatching newbies, so any advice is welcome!