In the nvl_phonetext screen you can see that the "what" text has a xsize defined, increase this number and it should work :) There is probably other value that need changing but I'm not able to test atm
Unsure if you still check up on this, but I'm trying to do a similar thing and changing the xsize under nvl_phonetext didn't change it. Were either of you able to figure it out? I feel like I've messed with everything and still haven't figured it out.
