Completed step 2 page 17-02 – riveted W-1201-R lower inboard wing skin to wing skeleton per Figure 1. Also left 20 rivets out that are identified in recent service bulletin 14-11-03 that addresses wing skin/spar flange rivet wear issue by adding a W-1201A doubler. Completed step 4 page 17-02 for right wing – riveted W-1203-R outboard bottom wing skin to wing skeleton per Figure 2.