@Mod.EventHandler
public void postInit(FMLPostInitializationEvent event)
{
	// Force initialization of ForgeHooks so it doesn't overwrite harvest levels when it
	// gets initialized later
	new ForgeHooks();

	//should work now
	Blocks.cobblestone.setHarvestLevel("pickaxe", 3);

	//works
	Blocks.bedrock.setHardness(5);
	Blocks.bedrock.setHarvestLevel("pickaxe", 3);
}