i would be patient until they get the kinks worked out. there are several MP5 threads here that you can read through.
The MP5 has a steep learning curve. You have to coddle it like a baby to get it to print decent shirts consistently. And I say consistently very liberally. I spent probably 60+ the first three months just trying to get the thing to work.
I've reached a point where I can get it to print well pretty regularly. But there are still issues. For instance printing solid colors on dark shirts never looks good. I have to throw out ink carts when they get down to 30 percent otherwise air gets in the lines. I have to flush the system with cleaning fluid every month or two to keep it running smoothly. All adds up to a lot of thrown out ink. The instruction manual contradicts a lot of what the techs tell you, which only adds to the learning curve. I've also had trouble getting techs to respond. They ask you to email pictures to look at and don't both ever looking at them or replying. They say they'll return your calls and don't. Its a real pain.
haha! the humidity blame game goes all the way back to their first printer! "how's your humidity, what does the nozzle check look like, soak your print head for xx minutes, etc." that was one of my main complaints when i would have an issue. obviously they are trying to weed out some simple solutions, but the humidity one got old really fast!They also try to blame everything on humidity levels!!!