Had some scratchy noises and moving structure while driving, not sure about some hull repair from pre owner. We thought he cracket the stringer too. The only way to see it- move the upper hull away. But luckiely the stringer ist ok, only realy bad glued to hull by factory.
More detail pictures follow, we are still working.
Bad type of glue by factory, also glas on gelcoat by factory.
Ready to fix it with new glass inside.