Whoa! I'm shocked by the way Z1 handled your issues... I've always gotten great customer service from them (specifically Jon and Spencer). Though this post makes me want to double check my SS brake lines I got with my brake kit (didn't have them installed due to the place I dropped my car off with taking 4 hours to just do the rotors/pads but that's another story in itself
)
Hopefully Z1 sees your thread on here and makes things right for you OP.