Express - Upgrade Channels from 192?

Hello, 

here's a dumb question, to which I'm pretty sure I know the answer, but just have to ask anyway... so...

Is there any way to upgrade the # of control channels on our Express 48/96 console? 

Or is there any workaround in being able to get more control out of it? ie - a simple phone call to ETC?, or something more sketchy like soldering some other components into the board (obviously it would void the warranty, but hey that probably expired now anyway).

For our conventional circuits it's been a fine workhorse, but now we've been adding LED's and just got a couple moving lights and are finding we're running out of channels (obviously it's time to upgrade from ca. 1996, but hey it's a local school district, so we have to buy our own toys).

Thanks

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