I know the growth syringe that can be crafted comes from MFR, but do the other two types of growth syringes come from MFR also. They have ":1" and ":2" suffixes on the end of the item ID. I looked at every machine in MFR and could not find one that produced growth syringes from wood. The guy said it was a sawmill that produced growth syringes as a by-product. He said it produced a ridiculous amount of growth syringes, so my guess is that it could have come from a mod that took away that functionality. I'll look through change logs and see if I can figure it out.