I don't have any specific information about the Voyager SLR, but with most stitch regulators there is an "on" mode and an "off" mode. Be sure yours is "on". Also there must be sensors somewhere on the moving part of the frame that keep track of the speed with which the head is being moved. Be sure these are attached correctly and are clean. If you watch the sensors while you move the head, you may be able to tell whether they are moving smoothly. Hope this helps.