Brewed a Belgian quad on 10/20. OG 1.080. Fermentation was crazy. Used 3 pkg of wyeast 3522. It's still in the primary and just took a gravity reading. It's 1.020. Tastes a bit sweet. What's the typical final gravity of a quad? Should I let it go a little longer or give it a few more days and check the gravity again before racking to a secondary?