Step 7, page 015E-1 in Builder's Manual
Here's rib #5. The front end is modified to fit over a long wing channel.
Step 6, page 015E-1
The is the aft end of the Root rib. The clip is modified as per step 6.
Working on the fuel tank mounting brackets.
These little triangle mounts will need to be riveted to the compression tubes before all the ribs are installed and 'in the way'.