So I'm on day 9 of primary fermentation. Instructions say about 6-8, so I'm still close enough to not be overly concerned. Fermentation has slowed way down... instructions say to rack to the carboy for the next step at 1.020. In the past 2 days I've only dropped from 1.060 to 1.040. Bubbles in airlock are about 1 every 5 seconds +/- 1. Should I wait it out, or should I give it a boost with some Fermaid-K? Something else? Welcome input... thanks!