While waiting, we measured. The west gate, from beep of the scanner to fully open, is about 4 seconds slower than the east. It's about 14 vs. 18 seconds. According to one of the guards, the west side gate actually lifts then opens, though we've not noticed that as it takes a few seconds to get there from the 'pad.'
Let's push for a fix to the remaining dip right as you exit the east entrance gate. They did a nice repair job on the other one down by the bridge. One down, one to go.