I am currently brewing a true brew pilsner kit. Started it last sun am and fermentation started and lasted until tues am when it came to a complete halt. SG was 1.041 supposed to finish at 1.012 and is currently stuck at 1.021. It is supposed to be ready to rack a week after starting, however being stuck on 1.021 has me concerned and wondering what to do. Do i go ahead and rack, or do i have to jump start the yeast somehow? Started the fermentation process at approx 68 degrees, and since have increased the temp to 72 degrees. Any advice would be greatly appreciated!!!!!