1984 Honda VF500F, Fuel Joint Tubes

1984 Honda VF500F, Fuel Joint Tube Help

I just bought a 84 VF500F. I've been stripping it down and fixing it up. The carburetor fuel joint tubes (part # 16047-KE7-003) were in real rough shape and needed replacing. I ordered a new set of tubes but one of the new tubes is slightly different from the old ones. One of the new tubes has a smaller Internal diameter then the other, is this supposed to be the case? My old ones both have the exact same ID size. If it's supposed to have a smaller ID, where does this tube go, at the front? (in between carbs #2 & #4) or to the rear? (in between carbs #1 & #3)