Steele is fourth, and Chaffer eighth, despite having finished 11th and 12th on the tricky 1.45 kilometre Lake Placid course, a venue of the 1932 and 1980 Olympic Winter Games.
After finishing in the top 10 in the previous two events, Chaffer and Steele were unable to come to grips with the conditions, in an event won by the USA’s Noelle Pikus-Pace.
Steele started promisingly, setting the seventh best time on her first run, but a time 0.20 seconds slower on run two saw her only 14th quickest, dropping her to 12th.
Chaffer was also 14th on her first run, but picked up the pace to be 9th fastest on run two, moving her into 11th place.
Despite this, Steele is just 123 points behind World Cup leader Elizabeth Yarnold from Great Britain, with Chaffer less than 100 points further back.