I haven't brewed many lagers (this was my first decoction) and was about to bottle this weekend until I took hydrometer readings approaching 1.03. This was a Vienna lager with OG of 1.05, using Saflager S-23, and four weeks of fermenting at ~50F. I recall saccrification may have been on the high side at around 157-158F. Just need more time here? How many weeks is typical for this yeast?