the odds that consecutive tests have a liberal scale are good.
in the last 17 disclosed LSATs, back-to-back scales, without Dec-June numbers, have gone from higher(harder) to lower(liberal) by 2+ points 4 times.
Consider Oct(90-170) and Dec (87-170).
they have been the same or varied by 1 point 7 times.
they have not gone from low to high by 2+ points.
when consecutive scales go from high to low by 2+, such as Oct-Dec, they are typically followed by a scale that varies by 1 or no points.
It appears that back-to-back scales don't go from a low to a high extreme (ex: 87-170, 91-170).
Given Dec was 87, Feb is likely to be an 87 or 88.