I'll check it out for sure. I've had a few tattoos that healed awfully, but usually it has a lot to do with my lifestyle at that time, not getting enough sleep, staying out late drinking , eating crappy food, etc.
Now, I sort of go into training before a large tattoo session, haha. Sleeping 8+ a night, paleo diet, cross training, gallon of water a day, that sort of thing. At least it eliminates me being the problem