You have taken the right approach, and we are glad to see you were able to succeed on our own.
Should other questions arise, do not hesitate to contact us.
One thing we would recommend is optimizing the code - create a reference to the tooltip
RadToolTip tip = ((RadToolTip)e.Item.FindControl("RadToolTip1"));
Then use it to set all required properties. Also - the Sticky
property is false by default, so you do not need to set it explicitly.
the Telerik team