Dom Pedro II said:I'm looking at my enormous spread sheet of techs and improvements, and I'm see A LOT of gaps...
I'm setting it so that everybody has the same number of technologies, or at the very least CLOSE to the same amount.
Basically, there's going to be:
8 Ancient techs per Civ
12 Middle Age tech per Civ
6 Industrial tech per Civ
2 Modern tech per Civ
Now... this can be distributed between cultural-specific and civ-specific techs, but every Civ should have these number of techs in addition to the techs that everybody can research.
Why don't you post the spreadsheet or a subset (e.g., showing Civ unique techs and/or their absence)? It'd make it easier for anyone trying to assist you in filling in the gaps

-Oz