Overhead squats

Had to improvise some woods the other. Also, because of some scheduling difficulties, we had to cancel yesterday's workout and add another wood to this 3 day split. Overhead squats this morning. The Workout:

Overhead squats 1, 1, 1, 1, 1, 1, 1

Weight: 175, 185, 190(f), 190, 190, 185, 135

I did not feel stable enough after the first failure to move up to 195 lbs. The challenge of OHS's is clearly shoulder strength and not leg strength.