I use to have the 440 edelbrock.....sold it several years ago with the notes and instructions, but from memory don't worry about the 0 setting....just adjust to the spot that jets it right....if you don't run out of clicks you won't need another needle. Mine came with another needle but was always able to make minor adjustments in summer and winter to dial it in.....think I was in the high 20's on clicks also. Liked the carb a lot, but it was just killing my thumb to much on long races or all day rides, too stiff for my liking....hope this helps ya.
1984 Honda 200M ATC
1985 Honda 200X ATC
1986 Honda 200X ATC
1999 Honda 406EX....11:1, Web Cam / Hardened rockers. Ported. WB CDI. CT Racing header. WB E-Series slip on. Lonestar swinger.
2001 Honda/KTM 520 Hybrid Quad. Its like a 400EX but twice the horsepower.
2014 Artic Cat Wildcat Trail XT