Ore gen bugs

Hello. I hope this is the correct place for the modpack I'm making to have bugs helped. I have found no other suitable place for this thread.

My problem is that many ores are rarely generating, or not appearing at all, and OreGen seems to be mainly of just a few mods. Not enough useful ores. Not very much Tin. Copper only from 3 or 4 mods. No Railcraft ores at all, not even Poor Ores, except for Poor Iron Ore tha's it. Configs checked, everything is enabled. I want to show this... But how can I show a lot of ore at once in SinglePlayer?