Is there a command which will move a docked toolbar to the left most available position.

I have a situation where I create a new toolbar, and then make the existing one not visible. When I release the new toolbar and make the old one visible it has moved to the right as if the released toolbar was still there.

eg
otbnew= createobject('tbnew')
otbnew.dock(0)
otbnew.visible = .T.
tbold.visible = .F.
* this leaves the new toolbar to the left
*
* do stuff here
*
tbold.visible = .T.
otbnew.release()
* this leaves a gap - but I wan't the old toolbar back where it was.

I also need to do this in a way that doesn't cause forms to jump all over the place, ie there must always be at least one toolbar present.