I'm in the same situation. I have an Imperial IPA sitting at 1.008 after 3 weeks. This beast is a 14.6%ABV. I used my house yeast to start. It was a 6L starter 4th generation of 1056. I then added a 2L starter of WLP099 with a SG:1.030 and added 4#dextrose in 1# increments for four days. I...