I need to build a 24" wheel for my Big hit. I was thinking of doing a Sun/Intense Mag 30, I think the ERD is 475mm. On XT disk rims 36hole 3X. The lenghts that I get are 225mm and 223mm. The problem is that no one in town stocks those sizes, and SBS and Downeast don't have them in stock either. I Checked about every website that I could and no one stocks those sizes. Did I goof on the calculation. I even went down to a 32 hole but the shortest spokes I can find are 236mm. Can anyone help? I need the spokes ASAP so I can ride my bike.