1. Americium-241 can't be liquified. the recipe exists but there's no technology to unlock that recipe. I checked all the other liquification recipes and they seem fine.
2. Decay hastening recipes can be prodded, by putting prod mods inside the decay hastening facility before putting the ingredient inside. I assume this is unintended because you can't do it the other way around. I only found out that this is probably unintended after I've already finished the mod :/

Anyways thanks for the great mod! I had a lot of fun.

Oh another one I forgot:

In the recipe for HEC science pack, Fluoroketone isn't marked with "ignored_by_productivity", so with over 100% prod, you get more hot fluoroketone out than the sum of cold fluoroketone and plasma put in, creating a positive loop for fluoroketone.

Though you could say this is intended but this would be a very convoluted way of fluoroketone production.