[news.eclipse.platform.rcp] How to set default key bindings?

[Brandon Kane <brandontkane@xxxxxxxxx>]

Hi there,

I have an RCP (3.2.1) application that is currently a single feature 
comprised of a single plug-in.  All actions are linked to commands in my 
plugin.xml as follows:

  <extension
        point="org.eclipse.ui.commands">
     <category
           id="com.brandonkane.category.x"
           name="x"/>
     <command
           categoryId="com.brandonkane.category.x"
           id="com.brandonkane.x.gui.actions.SomeAction"
           name="Perform Action"/>
  </extension>

I then have a set of key bindings and a scheme like this:

  <extension
        point="org.eclipse.ui.bindings">
     <scheme
           id="com.brandonkane.scheme1"
           name="scheme1"/>
     <key
           commandId="com.brandonkane.x.gui.actions.SomeAction"
           schemeId="com.brandonkane.scheme1"
           sequence="M1+G"/>
  </extension>

When the application is run, none of my key bindings are usable for the 
actions.  If I go into the preference page 
"org.eclipse.ui.ExtensionFactory:newKeysPreferencePage" and choose my 
custom scheme then all my key bindings work as desired. 

So, a number of questions:

How can I force this scheme to be used?  Is there a way through a 
property?  Or can it be set programmatically? 
Is there a way to disable the Default and eMacs schemes that are part of 
the default setup?

Thanks in advance, any assistance would be greatly appreciated.

Brandon