12F683 - basic code not working

[Scampy]

I've just transferred the project from the development board to stripboard. The circuit is running fine in that the RTC is being read and serial comms are working, however the PIC is not driving the relays hard enough to move the contacts (although they can be heard clicking slightly). I've changed the base resistor as I'm now using 5v DIL relays with contacts rated at 2A 30v which should be OK for driving a 6v motor that draws 700mA under load. In the attached circuit R1 is 100 ohm, Q1 is a BC639 NPN and the relay coil has a resistance of 63 ohms. I've also found that when the PIC makes the pin high it's reaching 2.84v and not 5v or near as dammit. Any suggestions ?