diff --git a/matflow/data/demo_data/surfalex_tensile_test.zip b/matflow/data/demo_data/surfalex_tensile_test.zip
index ae9ca06d..1ce7f053 100644
Binary files a/matflow/data/demo_data/surfalex_tensile_test.zip and b/matflow/data/demo_data/surfalex_tensile_test.zip differ
diff --git a/matflow/data/workflows/fit_single_crystal_parameters.yaml b/matflow/data/workflows/fit_single_crystal_parameters.yaml
index 1a2afdc5..867d9ef8 100644
--- a/matflow/data/workflows/fit_single_crystal_parameters.yaml
+++ b/matflow/data/workflows/fit_single_crystal_parameters.yaml
@@ -2,6 +2,8 @@ doc:
   - >
     Fit single crystal parameters using an experimental uniaxial tension stress-strain
     curve and an iterative Levenberg-Marquardt fitting process.
+    Note: For best results and least required iterations, user is advised to first
+    calculate approximate single crystal parameters from their experimental data.
 
 loops:
   - num_iterations: 2