Apparently, ITT fails to change the harvest level of ElectriCraft ores, because it provides its harvest level by the appropriate method in Block. This means that its harvest level remains unchanged.

The only thing I can think of is that ITT is using the old system in ForgeHooks, but that was deprecated in early 1.7 and has largely been abandoned.

To be fair, I do not really see a way around this short of either ASM to replace the method body - which you are free to do if you like, given the simplicity of the code, and I suspect you will need for other mods' ores as well - or my writing a reflective handler to read your configs, which I would rather not do.

ITT uses the standard Forge API, Block.setHarvestLevel, which is neither old(?) nor deprecated.

OK, I can see why this would have failed. I override getHarvestLevel(), which means calling setHarvestLevel changes nothing of importance. The return value is a final int specified in an enum constructor, so I do not see a clean fix to this...

At any rate, closed since it is not on your end. No, the above is not the deprecated system I was referring to.

Well, I suppose you could iterate over your ElectriOres.oreList in the blocks constructor and call setHarvestLevel for each. Then you also wouldn't need to override the function.

That...would work. :)