Two things come to mind:
1. Allbrands.com has excellent customer service. You can call them, tell them what you want and what machine you want it for, and they will send you a compatible part.
2. From another current thread on this board - get a laser line level and attach it to your machine as a seam guide.
http://www.quiltingboard.com/main-f1...e-t282749.html