ActiveSync - 2 KB is only option for Download Size Settings

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My company recently upgraded it's Exchange Server. For some reason the only option for the email download size is "2 KB" and "Headers Only". I am hoping there is a change that I can make somewhere in the registry to allow me to choose a higher size limit, such as 10 KB, 20 KB, or even "Full Message". Does anyone know if there is a way to do this? Is this set somewhere on the Exchange server? I'd be nice if some sort of a script program could automatically activate the "Get the rest of this message" link for all messages. Can MortScript do that? I did search the forums and can't find any answers. Thanks in advance!