diff --git a/examples/SpectralMethod/Polycrystal/shearXY.load b/examples/SpectralMethod/Polycrystal/shearXY.load
deleted file mode 100644
index 9f89ef886..000000000
--- a/examples/SpectralMethod/Polycrystal/shearXY.load
+++ /dev/null
@@ -1 +0,0 @@
-fdot 0 0 0   1e-3 0 0   0 0 0   stress * * *   * * *   * * *   time  60  incs  120 freq 20
diff --git a/examples/SpectralMethod/Polycrystal/shearXY.yaml b/examples/SpectralMethod/Polycrystal/shearXY.yaml
new file mode 100644
index 000000000..b2d7b914d
--- /dev/null
+++ b/examples/SpectralMethod/Polycrystal/shearXY.yaml
@@ -0,0 +1,8 @@
+step:
+  - mech:
+      Fdot: [0, 0, 0,  1e-3, 0, 0,  0, 0, 0]
+      P:    [x, x, x,     x, x, x,  x, x, x]
+    discretization:
+      t: 60
+      N: 120
+      f_out: 20
diff --git a/examples/SpectralMethod/Polycrystal/shearZX.load b/examples/SpectralMethod/Polycrystal/shearZX.load
deleted file mode 100644
index 6a3606340..000000000
--- a/examples/SpectralMethod/Polycrystal/shearZX.load
+++ /dev/null
@@ -1 +0,0 @@
-fdot 0 0 1.0e-3   0 0 0   0 0 0   stress * * *   * * *   * * *   time  60  incs  120 freq 20
diff --git a/examples/SpectralMethod/Polycrystal/shearZX.yaml b/examples/SpectralMethod/Polycrystal/shearZX.yaml
new file mode 100644
index 000000000..147e6eec6
--- /dev/null
+++ b/examples/SpectralMethod/Polycrystal/shearZX.yaml
@@ -0,0 +1,8 @@
+step:
+  - mech:
+      Fdot: [0, 0, 1e-3, 0, 0, 0, 0, 0, 0]
+      P:    [x, x,    x, x, x, x, x, x, x]
+    discretization:
+      t: 60
+      N: 120
+      f_out: 20
diff --git a/examples/SpectralMethod/Polycrystal/tensionX.load b/examples/SpectralMethod/Polycrystal/tensionX.load
deleted file mode 100644
index b0af80ea8..000000000
--- a/examples/SpectralMethod/Polycrystal/tensionX.load
+++ /dev/null
@@ -1,2 +0,0 @@
-fdot 1.0e-3 0 0  0 * 0   0 0 *  stress  * * *   * 0 *   * * 0  time 10  incs 40 freq 4
-fdot 1.0e-3 0 0  0 * 0   0 0 *  stress  * * *   * 0 *   * * 0  time 60  incs 60
diff --git a/examples/SpectralMethod/Polycrystal/tensionX.yaml b/examples/SpectralMethod/Polycrystal/tensionX.yaml
new file mode 100644
index 000000000..a7a83a6f2
--- /dev/null
+++ b/examples/SpectralMethod/Polycrystal/tensionX.yaml
@@ -0,0 +1,15 @@
+step:
+  - mech:
+      Fdot: [1.0e-3,0,0,  0,x,0,  0,0,x]
+      P:    [     x,x,x,  x,0,x,  x,x,0]
+    discretization:
+      t: 10
+      N: 40
+      f_out: 4
+  - mech:
+      Fdot: [1.0e-3,0,0,  0,x,0,  0,0,x]
+      P:    [     x,x,x,  x,0,x,  x,x,0]
+    discretization:
+      t: 60
+      N: 60
+      f_out: 4