I did smile when read the post.
Stage 3 kit are needle design better then dynajet kit as they just oval the emusion tube in months design is so bad especially with the lip.
I found K and N filter just with 1mm ground out rubber, stock jets and emulsion tubes, slightly lighter slide springs, 1 degree advance with engine mods and only 1186 got me to magic 160 and was completly linear not flat spots and so user friendly.
Fcrs take some getting used to but are great.
Did you see my thread did years ago on spacers I made to told needles square to get away from plastic needle holders, that hold them at angle with premotes even more wear.
Wonder if its in volts.
Streetfighter guy I think took my design and was punting them out to sell.