System.Windows.Forms.ListView in .NET Framework version 2.0.50727 SP2

I work with .NET Framework version 2.0.50727 SP2, Visual Studio 2005.  I have two Windows.Forms.ListView controls on a windows form (Popup Window). Both ListViews are set to View="Details",  Scrollable=true, CausesValidation=true, both controls use ListView.Items.Clear(); 

ListView.Items.Add(ListViewItem) to populate their contents. Selecting a item from ListView Control1 will re-populate ListView Control2.

My issue is when scrolling the vertical scrollbar on ListView control1, the items (ListViewItem) shall be displayed/painted at ListView column header's bottom portion -- about 1/2 height of the header height, sometimes the items shall be displayed/painted out of the ListView.

Any suggestion will be appreciated.

Linda800