I found out the reason for the back cylinder being all carboned up. I forgot I dropped one of the plugs on the ground (whoops) months back when I was putting the motor together. It pushed the tip in so the gap was way to close.

Tested the injector just in case and it still works. All the gaskets and stuff get in tomarrow so I'll have the motor put back together tomarrow after work, installed in the car by tuesday and running by tuesday night or wednesday.