I did the repair kit to the seats in my C6. It helped but didn't last long. The metal supports inside the frame are poking into my backside.
Yesterday, I spent a solid 3 hours adding more foam, jute and reinforced the cushion to fix the problem, but it was no avail. It still pokes my backside.
Any suggestions on what to do before I go and spend a couple of grand on a new, aftermarket seat?