[apples000]

From our teams experience using jaguars is that they can sometimes fail and cause intermittent problems like the ones you describe. Also, make sure that you're motors aren't running in opposite directions and that your gearbox is working well. I don't usually use labview, but I thought that it was unnecessary to use a watchdog and that could be causing the problem. You might want to try running them motors without them connected to the gearbox. If that doesn't work, I'd just try creating a new robot project and not adding the watchdog. Also, double check that all your parts are well connected, and that the joystick is on the same port in the driver station ans in LabView.