I just bought an older Godin BG-IV (with EMGs and Schaller roller bridge)...
I've got the neck where I think it should be in terms of relief...
The thing is i set the bridge saddles as low as they can go... The action is totally usable, but I still have no buzzing. I'm thinking it could be lower.
I'd like to get lower action as I think it would work... Is the only available option now a neck shim? Should I be looking at anything else??
A straighter neck will allow you to set your action higher. If you bottom out with a bit of relief, try reducing the relief. I'd go with EADG's advice, if you seriously don't want a shim in your bass.