Did you change plastic back to using the assembler for creating plastic bars?

Doh, yes sorry thats the angelssmeltting extended.

Angel I've been playing with expensive recipes enabled and hardcore copper wire recently and I've noticed a few inconsistencies.

By hand:
1 x Iron Gears from 4 Iron Plates (50 x Molten Iron)
Using regular casting:
2 x Iron Gears from 40 x Molten Iron
This is a greater than 100% bonus from casting ...