Hello Andy Green,
The web report viewer toolbar is not customizable and if you want to use custom controls you should create your own UI. An example of custom toolbar is available in this blog post: Custom Toolbar for the Web ReportViewer
the Telerik team
Watch a video
on how to optimize your support resource searches and
check out more tips
on the blogs.
Follow the status of features or bugs in
and vote for them to affect their priority.