Good Morning Oliver,
I've did some test with LCD ... now I would ask to you if is possible change LCD pin ?
because inside my sketch I'm using "Virtual Wire Library" where as default use a
PIN 11 for rx and PIN 12 for tx and PIN 10 for push to talk ... well I've tried to specify other pint to use with the function but the display still to work not properly ... If i comment the part related to Virtual Wire everything is working well ...
So, what could advise me to do ?
thanks for the support 
have nice a day,
gnux