DataGridView programmatic changing DataGridViewColumn does not always update the client view

I am using a Datagridview were I have a 2 layouts. The user has buttons to toggle between them. This works fine using the following code to change the column porperties:

private void SetColumnOrder()
{

List items = m_WorkSheet.LoadColumnSettings(m_SessionState);
DataGridViewColumnCollection columns = c_DataGridView.Columns;
int sensorId = 0;
for (int colInx = 0 ; colInx < columns.Count ; colInx++)
{

for (int i = 0 ; i < items.Count ; i++)
{

sensorId = ((WDSSDataObject)((ColumnTagItem)columns[colInx].Tag).DataSource).DB_ID;
if (items[i].SensorId == sensorId)
{

columns[colInx].Width = items[i].Width;
columns[colInx].DisplayIndex = items[i].DisplayIndex;
columns[colInx].Visible = items[i].Visible;
ColumnTagItem a = (ColumnTagItem)columns[colInx].Tag;
columns[colInx].Tag = new ColumnTagItem { DataSource = a.DataSource };
columns[colInx].Update();
c_DataGridView.Update();  // did not help but I tried it
break;

}

}

}

}

However if the user manipulates a column A in DGV ie  resizes the column and then toggle between layouts then column A does not change back to the width specified by the layout, this is also true for show/hide and move.

The only thing I have not tried was to drop the columns from DGV and rebuild them.

Any thoughts

Alex