So after 3 days of trying to find the time to build this i finally finished. i built a makerfarm prusa i3 8" printer... i am now however having a hell of a time getting the sucker to print right... every time i try and print the test cube it number one does not start in the middle of the glass... and number 2 keeps printing all the way to the end... So for instance, it will print a square, start to fill it then when it goes to print the edge again to build it higher it prints above where it first started and just keeps on working its way farther and farther to the other edge of the glass on my y axis... PLEASE HELP! what there heck am i doing wrong?