Lately when sending to print to my tjet balzer, after I press the print button on the machine, the bed travels to its starting spot then waits for the print information to be loaded from the pc. More frequently there is a long delay before the printing begins. Several times it has timed out altogether and I have to restart the printer. Other times it has printed white underbase then timed out at the color printing. When the timeout occurs, the computer screen says there was an error in sending to the port. Aside from switching usb cables or usb ports what else should I try?