Looking at the photo, you need either to swap the two back with each other or the two front with each other.
Right now the two props on the right of the MR (Left side in the photo) are clockwise props, and the two other props are Counter clockwise.
They should be
CCW...CW.........................CW .... CCW...............CW....CCW
.......x.................or....................x..................NOT.........x
CW...CCW .......................CCW....CW....................CW.... CCW
Check the diagram.