Checked the sealant and it cured well.
09-21 Moved on to attaching the front spars and riveting per plans. Did a lot of double checking to make sure everything was correct, and it was and riveted per plan. Did rivet left side top front inboard 3-3.5 rivets and drilled one out, they are not riveted in plans. No structure behind, so leaving them.
09-22 Continued riveting per plan, left elevator root ribs inboard close out. Did do the top aft flange to rear spar twice, rivet is ok, but not great, hard to access, did with flat sets. E921 on left side is also ok, top rivet is worse then bottom, but are within specs.