Lift the plate and look in the upper right corner. You'll see two little pins in a square opening. Dust very, very gently with your little brush.

I have the 12000, but also have the S7. The reason I bought it rather than the S5 is that the machine software is nearly identical to the 12000, so it's nearly mentally seamless switching between them

The last PP quilt top I did was a modified mariner's compass that had some "monumental" intersections. Even using 60 wt thread, I still had to tear away some of those paper layers from the intersectio

Are you using the HP stitch plate with it? It should work very well for normal piecing, but I've never tried it with paper piecing. It may want higher foot pressure considering all the layers when joi