Unscrew the left circuit board. Note: Mine had spots for 7 screws but only six were installed. Might not mater but I took a picture and made sure to put the screws back in the same holes.

The second picture shows two plastic tabs that have to be pressed towards each other to release the board. The tabs are far enough apart that I could press one at a time while lifting that side of the board.

Once the left board is loose change all the switches and check the alignment (listen for the click, same as the last board).

Trim the excess lead length.

Once all switches work screw the board back down and listen for clicks one last time.