Heres how it goes for a stock banshee.
Mikuni VM26SS roundslide
Pilot jet size:25
Needle:5N7
Needle clip:Middle (clip #3 of 5)
Main jet size:200 (some dealers will provide or install 190, 210 or 220 mains)
Main jets are standard Mikuni small hex mains, available from most bike shops, and come in increments of 10 (210 is one size larger than 200, etc.)
Pilot jets are Banshee-specific, only available from a dealer or a knowledgable shop, and are available in increments of 2.5.
Yamaha pilot jet part numbers:
27.5 Pilot:260-14142-27
30 Pilot:260-14142-30
32.5 Pilot:260-14142-32
35 Pilot:260-14142-35