[Lime Whips]

So I just tried to make a 15 furnace auto smelter from this video: https://www.youtube.com/watch?v=acKnjrKSqzI
but the problem is that the hoppers that are supposed to put the fuel and items in the smelters aren't fully delivering the items it goes a little ways then the items just get stuck. here's some pictures and my world DL




My World Download: http://ge.tt/api/1/files/265taYh1/0/blob?download

[Lime Whips]

From what I can see, the hoppers are pointed towards the sides of the chest. They have to go in through the top.

so should I just move all those hoppers on top the chests or would that screw up the whole design?