In /boot/config.txt , can you confirm you have deleted the old config for PiScreenV1 and only have the new config.
Did you use evtestto confirm if the touchscreen is working?
if not, you can install it with
sudo apt-get install evtest
Please confirm if the screen is "white" or "black"
What about when you enable the console on the PiScreen... do you see this?
Mark --OzzMaker.com --