Hi Drew Reutlinger,
You can use BindingRedirection with probingPath element to upgrade the version of Telerik.Web.UI.dll, but there could be some issues with the controls due to internal dependencies between the version of Telerik.Web.UI.dll and all other dlls. Generally it is better to use the regular SP of Sitefinity which include the official releases of RadControls for ASP.NET AJAX.
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