After completing drilling the lower aft skin to the skeleton I realized I still need to finish rib 9#. I removed the aft skin again from the skeleton and then removed rib #9, I left this one only cleco'd in place. Firstly I installed the vertical channels on the rib, I had made these earlier. I received the new piece of phenolic for the aileron belcrank spacer recently as well, luckily it is the correct thickness now, so I also cut out the spacer tonight. I had already made all the other parts for the belcrank as well so now it will just be a matter of putting it all together and installing it onto the rib.