In the latest RR3 there are a few bugs. One of them is in the Tinker's Constructs mod, where you can "enchant" your weapons and tools using various items. Combine your weapon with Certus Quartz or Nether Quartz, and it will do extra damage. Problem is, putting in ANY amount of Certus Quartz will give your weapon 24 charges instead of the amount you put in. So you can max out a weapon's damage with 9 Certus Quartz, instead of sacrificing more than 200 of it. I'd like to either fix or disable this on my server, as it's kinda gamebreaking.