After Jeff and Steven McDonald reconvened Redd Kross in 2006 (with the late-'80s line-up of guitarist Robert Hecker and drummer Roy McDonald), they seemed content to play the occasional festival show or short tour. For Redd Kross fans waiting for more music, it looked like 1997's Show World might be it as far as new albums went. The brothers had a trick up their sleeve, though, and in 2012 they released Researching the Blues, a self-produced album that not only continues their stellar recorded legacy but gives it an electric boost…