diff --git a/blocks.py b/blocks.py
index 9e1ae45..80cc34e 100644
--- a/blocks.py
+++ b/blocks.py
@@ -15,6 +15,9 @@ for name, data in JSON_BLOCKS.items():
     for state in data['states']:
         BLOCKS[state['id']] = name.replace('minecraft:', '')
 
+SINGLE_SNOW = 3921
+SOUL_TORCH = 4008
+
 AVOID = [
     'lava',
     'water',
@@ -184,8 +187,8 @@ NON_SOLID = [
     'void_air',
     'cave_air',
     'lantern',
+    'soul_torch',
 ]
-SINGLE_SNOW = 3919
 
 LOGS = [
     'oak_log',
diff --git a/packet_handlers.py b/packet_handlers.py
index 8833ae0..844ef2f 100644
--- a/packet_handlers.py
+++ b/packet_handlers.py
@@ -10,6 +10,8 @@ import utils
 importlib.reload(utils)
 import path
 importlib.reload(path)
+import blocks
+importlib.reload(blocks)
 
 def handle_join_game(packet, g):
     print('Connected.')
@@ -19,7 +21,7 @@ def handle_join_game(packet, g):
 def handle_block_change(packet, g):
     l = g.local_state
 
-    if packet.block_state_id == 3887:
+    if packet.block_state_id == blocks.SOUL_TORCH:
         try:
             l.goal = LPoint3f(x=packet.location[0], y=packet.location[1], z=packet.location[2])
             print('new waypoint:', l.goal)
diff --git a/path.py b/path.py
index deff7f0..e980ffd 100644
--- a/path.py
+++ b/path.py
@@ -188,47 +188,47 @@ class Pathfinder(AStar):
         return True
 
     def check_ascend(self, node, offset):
-        if not self.check_traverse(node, offset):
-            return False
-
         dest = utils.padd(node, offset)
 
         if not self.bair(utils.padd(node, BLOCK_ABOVE2)):
             return False
 
-        return True
-
-    def check_descend(self, node, offset):
         if not self.check_traverse(node, offset):
             return False
 
+        return True
+
+    def check_descend(self, node, offset):
         dest = utils.padd(node, offset)
 
         if not self.bair(utils.padd(dest, BLOCK_ABOVE2)):
             return False
 
+        if not self.check_traverse(node, offset):
+            return False
+
         return True
 
     def check_descend2(self, node, offset):
-        if not self.check_descend(node, offset):
-            return False
-
         dest = utils.padd(node, offset)
 
         if not self.bair(utils.padd(dest, BLOCK_ABOVE3)):
             return False
 
+        if not self.check_descend(node, offset):
+            return False
+
         return True
 
     def check_descend3(self, node, offset):
-        if not self.check_descend2(node, offset):
-            return False
-
         dest = utils.padd(node, offset)
 
         if not self.bair(utils.padd(dest, BLOCK_ABOVE4)):
             return False
 
+        if not self.check_descend2(node, offset):
+            return False
+
         return True
 
     def check_parkour(self, node, offset):