since 0.17 crafting speed formula should be
tier.multiplier * 144/3

lib\entities.lua:28

Fixed. Thanks for letting me know. :)

Actually, sorry for bothering you like that but it also looks like furance crafting speed is 1 level lower than it should be since grey belts were added. Yellow minifurnace smelts at speed of grey belt, red at speed of yellow etc. You should consider either bumping crafting speed

crafting_speed = (tier.multiplier + 1) * 48

or adding grey, "basic" tier

Well, It seems to me that would work when using Bob's Logistics. However it would also alter the vanilla tiers.

I am working on it.

Testing Now.

Uploading now. Please let me know if I fixed it.