Rahr's two-row is more acidified than "regular" two-row. To get around this, you use 5 Lovibond rather than 2. There's a reference to this in Bru'n Water somewhere to account for this.
Something to keep in mind if you're using Rahr two-row. Took me a few times to get it right and I was chasing the wrong thing-very frustrating.
I am using Viking. Sites description is 2.2-3.1. My bag does not say what this batch is specifically. That is higher than normal pale I believe? Could be contributing.
