The Full Boar and Touchscreens

I have done a search but cannot find anything about this. I have a Full Boar and I am having a little trouble with the external touch screens. I bought 2 that were recommended by Brad in another thread. However when I boot up the console, the screens offset to one external and on internal and the other two don't turn on. I am on the latest software update. I wouldn't think that this should be happening and that people have external touchscreens that the leave connected all the time. The only work around I have seen is to disconnect the DVI cables from the console, boot the console, then reconnect and re-calibrate every time. Any tips or tricks would be helpful.

Thanks,
Eric
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