Increasing the cost of siege weapons

[yupper]

I want to reduce the AI's tendency to mass produce siege weapons by increasing the build/upkeep cost. I know someone has already experimented with this but I can't recall his nick....I want to reduce the number of siege weapons I see in enemy army stacks but do not want to see the AI refrain from building any siege weapons at all. Any suggestions for a good balance?
Double the build/upkeep cost? Increase by 2/3?

[Lusted]

I was the one experimenting with it, and i at least doubled the cost of all artillery units, as otherwise the ai does build lots of them. Whether this is the best cost for them or not im not sure yet as i have not played enough of a campaign with these new costs.

[yupper]

Ah ok then. I'll do the same and report back if it works well.

[Trajan]

I hope that trick works because I hate seeing a full stack field army with 4-6 Trebuchets.