Nowhere can I find anything about dimpling/countersinking the F-1015A L/R Outboard Seat Ribs and the underlying F-1015B L/R Foot Well Rib Intercostal and F-1015F Spacer. The 1015A outboard foot ribs were riveted in back in section 26 page 6 step 10. They were even more securely riveted when the bottom skin went on. Now that Im up to section 29-15 Step 1 Paragraph 3. It says to dimple the F-1015B Intercosatals and F-1015F Spacers. No Problem. But what about the 6 holes below and the row of holes along the bottom of the F-1015A L/R Outboard Seat Ribs that were never dimpled or at least I can't find where you were supposed to. Instructed to or not I guess I'm going to have to drill out the Outboard Seat Ribs and dimple everything that will have on overlying dimpled skin laying on it! ARRGHHHH. Let me know if I'm missing something. Thanks