I've been stuck in the low 160s for months--since August actually. I kept drilling and scored a 163 on my November exam. I took a month off before getting back on the LSAT train, and I scored this after not touching the LSAT for a month. Praise God!
For those who remain in a plateau: Keep going. It will eventually click.

My buddy and I also scored eight less points on our April exams compared to our PT averages.