I think the first time I built a Q-Jet, I just bought the kit, and CAREFULLY disassembled it into three sections. The top plate, the main body and the baseplate, rebuild each section as a sub-assembly. Pay close attention to the float area, that's where everything is at in a Q-Jet, sometimes getting started on these things is just trial and error. Invariably, until you've gotten really familiar with a Q-Jet, or any other carb, you end up with a check ball laying out that you should have put in, and you have to take it apart again----I still do this sometimes.
BE NOT AFRAID, FOR WE ARE WITH THEE, BUY THE KIT AND MAY THE FORCE BE WITH YOU.
ps KEEP IT CLEAN