I see the problem with Platinum. ElectriCraft Platinum is harvestable by Iron, but does not have TiC recipes. CoFH Shiny Ore, on the other hand, requires Ardite to mine, and the shiny pickaxe mines at Obsidian level. Both are oredicted to Platinum.
I just have to figure out how to change ElectriCraft ore to require an Ardite-level pickaxe to solve the problem. The problem is that the configuration for Iguana's Tinker Tweaks seems to have ElectriCraft Platinum at level 6 (ardite) already.
As far as I can tell, it seems like the mining level of Platinum is getting overridden; I suspect ElectriCraft itself is enforcing the mining level, but I'm not sure, so I've asked Reika for some clarification.
In the meantime, we'll just leave Platinum as it is now, and trust players to not break progression. The ones that do are cheating themselves out of a challenge, anyways.
Onto the coal... Hmmm... strange. I have 263 and 263:1, but no 263:2. I'm curious to know where you got that coal. It's not showing up in NEI or the creative search.
As for aluminum and affine, I'm able to duplicate the issue, so I've sent a request to Draco to see if he can figure out what's wrong with Affine not spawning.