diff --git a/lightclient-circuits/config/sync_step_20.json b/lightclient-circuits/config/sync_step_20.json
new file mode 100644
index 00000000..5e5db520
--- /dev/null
+++ b/lightclient-circuits/config/sync_step_20.json
@@ -0,0 +1,40 @@
+{
+  "params": {
+    "k": 20,
+    "num_advice_per_phase": [
+      21
+    ],
+    "num_fixed": 1,
+    "num_lookup_advice_per_phase": [
+      3,
+      0,
+      0
+    ],
+    "lookup_bits": 8,
+    "num_instance_columns": 1
+  },
+  "break_points": [
+    [
+      1048565,
+      1048564,
+      1048566,
+      1048565,
+      1048565,
+      1048566,
+      1048566,
+      1048566,
+      1048564,
+      1048565,
+      1048566,
+      1048564,
+      1048566,
+      1048566,
+      1048564,
+      1048564,
+      1048566,
+      1048564,
+      1048566,
+      1048566
+    ]
+  ]
+}
\ No newline at end of file
diff --git a/lightclient-circuits/tests/step.rs b/lightclient-circuits/tests/step.rs
index bbba9385..8e02fd4f 100644
--- a/lightclient-circuits/tests/step.rs
+++ b/lightclient-circuits/tests/step.rs
@@ -22,17 +22,9 @@ fn test_eth2_spec_mock_1(
     #[exclude("deneb*")]
     path: PathBuf,
 ) {
-    run_test_eth2_spec_mock::<16, 20>(path)
+    run_test_eth2_spec_mock::<18, 20>(path)
 }
 
-#[rstest]
-fn test_eth2_spec_mock_3(
-    #[files("../consensus-spec-tests/tests/minimal/capella/light_client/sync/pyspec_tests/**")]
-    #[exclude("deneb*")]
-    path: PathBuf,
-) {
-    run_test_eth2_spec_mock::<17, 20>(path)
-}
 
 fn run_test_eth2_spec_mock<const K_ROTATION: u32, const K_SYNC: u32>(path: PathBuf) {
     let (sync_witness, rotation_witness) = read_test_files_and_gen_witness(&path);