No pictures for this one as I rivetted the ribs from session 2 and rivetted the two remaining internal ribs (too ambititous, should have 100% cleco'd these). Luckily the temperature was 10 degrees C so we had 3 hours of working time for the sealant.
For the record I have added a photo of the semkit in the caulking gun. I bought a plastic one as you need to sand/grind away the plunger slightly so that it fits in the semkit tube. These are great for the stiffener session, the ribs and baffle sessions as its quick to apply, minimal mess and great for making smooth fillets. Downside is they're expensive - welcome to aviation!
