diff --git a/animate2.cpp b/animate2.cpp
index 58abd0f..b103ec5 100644
--- a/animate2.cpp
+++ b/animate2.cpp
@@ -4,8 +4,12 @@
 #include "dbc.hpp"
 #include "rand.hpp"
 
+constexpr float SUB_FRAME_SENSITIVITY = 0.999f;
+
 namespace animate2 {
   std::vector<sf::IntRect> Animate2::calc_frames() {
+    dbc::check($sequence.frames.size() == $sequence.durations.size(), "$sequence.frames.size() != $sequence.durations.size()");
+
     std::vector<sf::IntRect> frames;
 
     for(int frame_i : $sequence.frames) {
@@ -54,10 +58,11 @@ namespace animate2 {
     if($sequence.timer.getElapsedTime() >= duration) {
       $sequence.timer.restart();
       $sequence.current++;
-      if($sequence.subframe > 0.9) $sequence.subframe = 0.0f;
+      if($sequence.subframe > SUB_FRAME_SENSITIVITY) $sequence.subframe = 0.0f;
       frame_change = true;
     } else {
       $sequence.subframe = std::lerp($sequence.subframe, 1.0, $sequence.timer.DELTA * $transform.ease_rate);
+
       fmt::println("subframe: {}, alpha: {}", $sequence.subframe, $sequence.timer.alpha);
     }
 
diff --git a/tools/animator.cpp b/tools/animator.cpp
index 4245d0e..29a6d44 100644
--- a/tools/animator.cpp
+++ b/tools/animator.cpp
@@ -156,8 +156,8 @@ animate2::Sheet sheet{
 };
 
 animate2::Sequence sequence{
-  .frames{0,1,0,1},
-    .durations{500ms, 266ms, 100ms, 100ms}
+  .frames{0,1},
+    .durations{800ms, 200ms}
 };
 
 animate2::Transform scale_tr{
@@ -167,12 +167,12 @@ animate2::Transform scale_tr{
     .max_y{0.8f},
     .simple{false},
     .flipped{false},
-    .ease_rate{1.0f/0.2f},
+    .ease_rate{4.0f},
     .scaled{true},
     .toggled{false},
-    .looped{true},
+    .looped{false},
     .easing = ease2::in_out_back,
-    .motion = ease2::scale_only,
+    .motion = ease2::move_rush,
 };
 
 animate2::Transform move_tr{