Hello Debbie,
I use my 1927 Singer 99K hand machine for straight line quilting. I never use a walking foot. Try increasing the pressure on the presser bar and use a hinged regular foot. You might be surprised by the results.
I also use the same machine for outline quilting around appliqué, but for this I use a hinged cording foot. You can see pictures on this thread.
http://www.quiltingboard.com/vintage...g-t190439.html