I finally have a working Amiga A4000 (after over 10 years of broken amigas and attempted rebuilds I finally have one that properly boots and runs the limited software I have collected for it. Now this has left me with a bunch of replacement parts including 3 extra 3640's that I no longer need but we're only bought as "untested". Beyond booting the OS and running SysInfo, is there a way I can test them that would satisfy any would be owner that they are buying something that they can rely on? I also have an extra A4000 case and power supply but tho use are easier to test.