The best way would be to remap the key for Load/Save. You can remap any key to a key on the virtual keyboard on the bottom of the screen.

But in this special case (LOAD/SAVE) I think its enough to press your Jog Dial.

I don't know if I would share the validation of DOTT as fully funtional. I played the game for some time on my w950i and found 2 scenes, where the game chrash. The first is when Hoagie starts to wash the dirty cart in front of the house (But this crash is not that bad, you can skip this scene by pre...