Like I said in the email. Im pretty sure it has to do with the 3v sync thingamajinks in the vga outs of your Epia board.
If you would have told me you had an Epia board, I would have not sold it to you. I did not sell it to make any profit, just trying to hook you up.
I cant be of much help on that mod, cause personally I never performed it or even read into it.
Hope it works out good for you.
ps: did you connect the touchscreen yet? heres the driver page to make it work.
http://www.elotouch.com/support/dnld.asp