The needles are adjust correctly, one takes a straight edge along the piston to make sure the shoulder on the needles are correct.  There is a lot of history here, had a very difficult time getting the needles and floats adjusted right in the bloat bowls, that took an enormous amount of time. I have a tach on the coil, next is to turn the nuts to go on the rich side, then rock back and forth to lean, looking for max rpms, at least thats what I understand. I've been running fuel out of a 5 gallon gas can, the excess goes back into the main tank, ran my gas can out of fuel.  The fuel tank is somewhat rusty, need to find if it is usable or now.