Hello Melissa,
Are you sure your timing needs resetting? chesk first of all that the needle is perfect and the right way round, if the machine is missing stitches you will need to retime it, e-mail me and I will give you full instructions, drivewithken@blueyonder.co.uk
Ken
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix sewing machines.