Well I have the PIC running the main code, and it displays the main intro and main screen, but it's not reading the DS1307 as it displays 10:10 regardless if the DS1307 is present on the board. I've checked continuity between the SCL and SDA lines, pullups and supplies - changed the DS1307, swapped pullups from 10k to 4.7K and back, and replaced the 37Khz crysta, but still no change in the display