All:
I just posted a source code file for use with a 4x20 display using Allard's Rel. 1.20.1 code as the base. Essentially, it should accommodate both display sizes if you change the #define's that appear around line 53. I have changed all of the function calls that use the original print routines and consolidated it into a single function that serves all display lines. Obviously, you need to pass into the new function which line is to be used for the message.
Let me know how it works.
Jack, W8TEE