Quote Originally Posted by TFM
The LCD may be connected to the PICmicro MCU using either a 4-bit bus or an 8-bit bus. If an 8-bit bus is used, all 8 bits must be on one port. If a 4-bit bus is used, the top 4 LCD data bits must be connected to either the bottom 4 or top 4 bits of one port. Enable and Register Select may be connected to any port pin. R/W may be tied to ground if the LCDIN command is not used.
I thought it might have to do with the amount of current the lcd draws and how much the micro can take, but I could be wrong. Looks like you might have to cut some traces, and reroute with with "wires of shame".