diff --git a/src/pylele/pylele2/body.py b/src/pylele/pylele2/body.py
index 9153e68..adc56e5 100644
--- a/src/pylele/pylele2/body.py
+++ b/src/pylele/pylele2/body.py
@@ -148,7 +148,7 @@ def gen(self) -> Shape:
                 bot <<= (0, 0, joinTol - midTck)
                 bot += self.gourd_flat_extrusion(thickness=-midTck)
 
-        elif self.cli.body_type in [LeleBodyType.FLAT, LeleBodyType.TRAVEL]:
+        elif self.cli.body_type.is_solid():
 
             bot_below = self.gen_flat_body_bottom()
 
diff --git a/src/pylele/pylele2/bottom_assembly.py b/src/pylele/pylele2/bottom_assembly.py
index 2061ff8..13d5552 100755
--- a/src/pylele/pylele2/bottom_assembly.py
+++ b/src/pylele/pylele2/bottom_assembly.py
@@ -77,14 +77,9 @@ def gen(self) -> Shape:
             body -= LeleNeckJoint(cli=self.cli, isCut=True).mv(-jcTol, 0, jcTol)
 
         ## Neck Bend
-        if self.cli.body_type in [
-            LeleBodyType.FLAT,
-            LeleBodyType.HOLLOW,
-            LeleBodyType.TRAVEL
-        ]:
-            if self.cli.implementation == Implementation.CADQUERY and (
-                self.cli.body_type == LeleBodyType.FLAT or
-                self.cli.body_type == LeleBodyType.HOLLOW):
+        if self.cli.body_type.is_flat():
+            if self.cli.implementation == Implementation.CADQUERY and \
+                self.cli.body_type.is_flat():
                 print('# WARNING: not generating neck bend, because does not work with cadquery and flat body')
             else:
                 body += LeleNeckBend(cli=self.cli)
diff --git a/src/pylele/pylele2/config.py b/src/pylele/pylele2/config.py
index 6ea3f5f..fa62c47 100644
--- a/src/pylele/pylele2/config.py
+++ b/src/pylele/pylele2/config.py
@@ -24,6 +24,14 @@ class LeleBodyType(StringEnum):
     HOLLOW = 'hollow'
     TRAVEL = 'travel'
 
+    def is_flat(self) -> bool:
+        """ Is Flat Body """
+        return self in [LeleBodyType.FLAT, LeleBodyType.HOLLOW, LeleBodyType.TRAVEL]
+    
+    def is_solid(self) -> bool:
+        """ Is Flat Body """
+        return self in [LeleBodyType.FLAT, LeleBodyType.TRAVEL]
+
 WORM_SLIT = ['-wah','-wsl','35']
 WORM    = ['-t','worm'   ,'-e','90'] + WORM_SLIT
 BIGWORM = ['-t','bigworm','-e','90','-fbt','35'] + WORM_SLIT
diff --git a/src/pylele/pylele2/tail.py b/src/pylele/pylele2/tail.py
index ae687e4..590e24d 100755
--- a/src/pylele/pylele2/tail.py
+++ b/src/pylele/pylele2/tail.py
@@ -51,7 +51,7 @@ def gen(self) -> Shape:
         assert tail_width > 0, f"tail_width too small! {tail_width}, should be larger than 0"
 
         ## flat middle section
-        if self.cli.body_type in [LeleBodyType.FLAT, LeleBodyType.HOLLOW, LeleBodyType.TRAVEL]:
+        if self.cli.body_type.is_flat():
             midBotTck = self.cli.flat_body_thickness
         else:
             midBotTck = cfg.extMidBotTck + 2*cutAdj
@@ -63,11 +63,10 @@ def gen(self) -> Shape:
                 .mv(tailX -rimWth -tailLen, 0, -midBotTck/2)
             tail = extTop + inrTop.mv(jcTol, 0, 0)
 
-        if self.cli.body_type in [LeleBodyType.FLAT, LeleBodyType.HOLLOW, LeleBodyType.TRAVEL]:
+        if self.cli.body_type.is_flat():
             # flat bodies do not have rounded bottom
             if self.cli.body_type in [LeleBodyType.TRAVEL]:
                 tail = tail.mv(5,0,0) # for whatever reason...
-            pass
         else:
             # rounded bottom
             extBot = self.api.cylinder_x(10 if self.isCut else rimWth, endWth/2)\
diff --git a/src/pylele/pylele2/top_assembly.py b/src/pylele/pylele2/top_assembly.py
index cea10a6..7225a4e 100755
--- a/src/pylele/pylele2/top_assembly.py
+++ b/src/pylele/pylele2/top_assembly.py
@@ -71,7 +71,7 @@ def gen(self) -> Shape:
             if fretbd.has_parts():
                 self.add_parts(top.parts)
 
-        if not self.cli.body_type in [LeleBodyType.FLAT, LeleBodyType.TRAVEL]:
+        if not self.cli.body_type.is_solid():
             # soundhole
             sh  = LeleSoundhole(cli=self.cli, isCut=True)
             top -= sh
@@ -92,7 +92,7 @@ def gen(self) -> Shape:
         if self.cli.body_type in [LeleBodyType.GOURD, LeleBodyType.TRAVEL]:
             chm = LeleChamber(cli=self.cli,isCut=True)
             # cut Brace from chamber
-            if not self.cli.body_type in [LeleBodyType.FLAT, LeleBodyType.TRAVEL]:
+            if not self.cli.body_type.is_solid():
                 chm -= LeleBrace(cli=self.cli)
             top -= chm