I've been mining for a few hours (IRL) and I've noticed something that really worries me: I have yet to find any naturally generated redstone ore. I've searched levels from y=72 all the way down to y=8, and not a single ore block. All the redstone I've gotten has come from looted redstone blocks in those castle-dungeon things. I've also noticed the same thing with lapis; all the lapis I've gotten has come from meteors. Are these supposed to be rarer than diamond (even for FTB), or am I just not looking hard enough? I've found plenty of gold and iron, ores that in previous packs were quite rare, but no lapis or redstone.