Check the feed dogs, they have to be up when using the even feed foot. Also if it is an old machine it could be that the feed dogs are worn and don't pull it through as nicely as it should. If you are using a heavy/puffy batting that would make a difference. Check the size of your stitches, they shouldn't be so small that it takes forever to get it quilted. Can you adjust the pressure of your foot? If so it maybe should be looser. Bunch your quilt so that there is no pull on the quilt at all. That will help the machine to pull it through.I hope some of these suggestions will help.