diff --git a/src/nvfp4_megamoe_kernel/cutlass_nvfp4_gemm/cutlass_nvfp4_gemm.cu b/src/nvfp4_megamoe_kernel/cutlass_nvfp4_gemm/cutlass_nvfp4_gemm.cu
index 00a92d43..4053279e 100644
--- a/src/nvfp4_megamoe_kernel/cutlass_nvfp4_gemm/cutlass_nvfp4_gemm.cu
+++ b/src/nvfp4_megamoe_kernel/cutlass_nvfp4_gemm/cutlass_nvfp4_gemm.cu
@@ -131,17 +131,20 @@ __global__ void remap_sf_to_cutlass_kernel(
         printf("[remap] flat_rank=%d MN=%d K_sf=%d total=%d\n", R, MN, K_sf, total);
     }
 
-    // Debug: print first few coordinates
-    if (dst_idx < 3) {
-        printf("[remap] idx=%d flat_rank=%d vals=", dst_idx, R);
+    // Debug: print specific indices to understand the coordinate decomposition
+    // Print idx 0, 1, 4, 16, 128, 512, 512*448, 128*448
+    if (dst_idx == 0 || dst_idx == 1 || dst_idx == 4 || dst_idx == 16 ||
+        dst_idx == 128 || dst_idx == 512 || dst_idx == 512*448 ||
+        dst_idx == 128*448 || dst_idx == 4 || dst_idx == 3) {
+        printf("[remap] idx=%d", dst_idx);
         if constexpr (R >= 8) {
-            printf("%d,%d,%d,%d,%d,%d,%d,%d",
+            printf(" f=%d,%d,%d,%d,%d,%d,%d,%d",
                 int(cute::get<0>(flat)), int(cute::get<1>(flat)),
                 int(cute::get<2>(flat)), int(cute::get<3>(flat)),
                 int(cute::get<4>(flat)), int(cute::get<5>(flat)),
                 int(cute::get<6>(flat)), int(cute::get<7>(flat)));
         }
-        printf("\n");
+        printf(" m=%d k=%d\n", m, k_sf);
     }
 
     int m = 0, k_sf = 0;