John, depending on which venturi is supplied to that .061, you can use the Texas Timer assembly or find yourself a Cox (red) postage stamp backplate and press out that assembly. The Cox needles are the brass needle with no knob with the black friction sleeve. These are the 128 TPI just like the Texas Timer version. Cut a piece of 5/32 tubing the same width of the venturi even a tad smaller in width and file a hole in the center. This hole is where the hole in the spraybar lines up. The 5/32 tubing is just a sleeve. The tubing can be soldered to the spraybar. Just clean and flux the perimeter this way no solder wicks into the hole in the spraybar. Sometimes the sleeved assembly is rather a tight fit, if not, a touch of JB weld works real well. JB weld can easily be cleaned off using standard rubbing alcohol. If you know anyone who has a Larry Driskill needle, these were a direct replacement and bolt right in.