DAWN:
May I ask, how much is the encoder box? I looked on the APQS parts list, and didn't see it.
I too am having the SAME issues as Durham. However, I took my quilt off, and I am going off of memory that it did it ONLY horizontally, not vertically.
I will attempt to tighten up my encoder wheel "again." Maybe hubby and I didnt get it tight enuf (close enuf) to the wheel.
But, in the interim, if it's a bad encoder, i'd love to know the price. THANKS for ALL YOU DO DAWN! Dont know where we'd all be without you!