Yesterday I did my production test batch of a French Roast made out of a new lot of coffee from Brazil. That turned out nicely so the next thing is verifying that all the blends that had the old French Roast as an ingredient still work with the new one or adjust the blend recipes so those continue to be delicious. No change needed to the espresso blend (40% French Roast, 30% Sulawesi, 20% Burundi, 10% Colombia).
The IR-1 has some characteristics that you might not see on other coffee roasters. For example, I'm hitting the maximum rate of change pretty far out from where that starts to plateau because the machine is overpowered on the front end (though prone to stalling on the back end so you have to know your machine to hit that particular example plan even running it at tenth capacity).
Author of Typica software for coffee roasters.