Radwagon 4 seat post slipping

[JESimmons]

I've just bought a new Radwagon 4.  Assembly went fine except the main seat post will not stop sliding down.  I've adjusted the clamp until I can barely close it, and the seat post still slips right down.  If I leave it all the way down and extend the secondary post, that one clamps securely.  Any suggestions?

I have no need to adjust the post after the initial fitting.  Can anyone recommend a bolt on clamp that will fit properly?

John

[Deejay]

took me a while too, but once the clamp assembly is lined up correctly it will work fine.
Unless the clamp you have turns out to be defective.

[JESimmons]

My seat post is covered in something that is silver like anti-seize compound used on bolts in automobiles.  Is this stuff supposed to be there?  It is clearly functioning as a lubricant of some kind.