Join Date: Jan 2013
Location: Humarock - Boston MA
That print is so out dated though, 1994. Back then they thought it was parasite related, now they arnt so sure. There's a little list of suspect causes. I've always been a fan of the carbon argument as i've seen this in real life, and the difference of using it and not using it, and most reputable shops wont use carbon.
I'm not into the image, but into the hobby...