I have a Joplin 4 seat post . The head on the seat post has started to rotate on the post any ideas on how it’s held on is it an interference fit . If so anyone know of any fixes . Cheers .

Service guide

There’s a guide block that prevents rotation(there will always be some but shouldn’t be too much).

It’s not the guide block its the actual head turns on the upper shaft

I think they’re glued on, send it to 2pure they might be able to re bond it or change the upper assembly..

Thanks will contact them