Do you have a new stalker v3 board coming that resolves the p5 defect? In order to map p5 to p3 on xbee socket is to remove the r10 resistor and run a wire from p5 to left side of the removed resistor. The flaw is plain as day on the board schematic, seeedstudio.com/wiki/Seeeduino-Stalker_v3
Seeed has known about this defect for some to time, you have not disclosed this design flaw in your documentation, yet you continue to sell a defective board; some might consider that fraud. The very least you can do is update the documentation, disclose the flaw and let the customer decide.
Bottom line: The p5 pad does not go anywhere.
When is the Stalker V3.1 with this defect resolved coming out?