Split Button for Office Ribbon

[SurveyorinVA via AccessMonster.com]

Hello all-

Currently I have a split button on my ribbon that's menu items are all large.
I am trying to find the proper commands to use to make the top menu items
large and the items under a splitter control normal size
(btnPMEmployeeAddFieldCrew). I currently have this in the xml file:

<splitButton id="sbPMMainFCrew" size="large">
<button id="btnPMFCrew" imageMso="OutlookGlobe" label="Field Crew" />
<menu id="PMSplitMenuFCrew" itemSize="large">
<button id="btnPMFCrewSchedule"
imageMso="TableStyleRowHeaders"
label="Field Crew Schedule"
description="I am a description"/>

<button id="btnPMFCrewAllocation"
imageMso="TableStyleRowHeaders"
label="Field Crew Allocations"
description="I am a description"/>

<menuSeparator id="myPMFCrewSeparator1" title="Quick
Links"/>

<button id="btnPMEmployeeAddFieldCrew"
imageMso="TableStyleRowHeaders" label="Add New Field
Crew"
description="I am a description"/>

</menu>
</splitButton>

Any thoughts would be greatly appreciated.
Thanks,
CF