diff --git a/modules/bidirectional_idt.scad b/modules/bidirectional_idt.scad
index 79da3a2..efc51ef 100644
--- a/modules/bidirectional_idt.scad
+++ b/modules/bidirectional_idt.scad
@@ -24,7 +24,9 @@ module bi_directional_idt(
     // id number prams
     id_number = 0,
     has_id = false,
-    id_flip_dir = [1, 1, 1],
+    id_scale = [1, 1, 1],
+    id_translate = [0, 0, 0],
+    id_rot = [0, 0, 0],
     // extra
     post_scale = 1,
     echo_stats = false,
@@ -46,7 +48,9 @@ module bi_directional_idt(
     if (has_id) {
         color([255/255, 0/255, 255/255])
         translate([finger_length*lambda/2, has_bond_pads ? -(bond_pad_leg_length * post_scale * cos(bond_pad_angle)) : -lambda*finger_length/2, 0])
-        scale(id_flip_dir)
+        translate(id_translate)
+        rotate(id_rot) 
+        scale(id_scale)
         text(str(id_number), size=id_text_size, halign="center");
     }
     
diff --git a/modules/bond_pad.scad b/modules/bond_pad.scad
index 35b866a..fd59d93 100644
--- a/modules/bond_pad.scad
+++ b/modules/bond_pad.scad
@@ -15,34 +15,21 @@ module bond_pad(
     bond_pad_shape = "square", 
     post_scale = false
 ) {
-    if (post_scale) {
-        circle(r=leg_width*post_scale);
+    circle(r=leg_width*post_scale);
 
-        rotate([0, 0, leg_angle+180]) {
-            translate([-leg_length*post_scale-leg_length_tweak, -leg_width*post_scale/2, 0]) {
-                // color([0, 255/255, 255/255]) {
-                    // arm
-                    square(size=[(leg_length)*post_scale+leg_length_tweak, leg_width*post_scale]);                
-                // }
-            }
+    rotate([0, 0, leg_angle+180]) {
+        translate([-leg_length*post_scale-leg_length_tweak, -leg_width*post_scale/2, 0]) {
+            // color([0, 255/255, 255/255]) {
+                // arm
+                square(size=[(leg_length)*post_scale+leg_length_tweak, leg_width*post_scale]);                
+            // }
         }
-        // pad
-        translate([post_scale*leg_length*cos(leg_angle), post_scale*leg_length*sin(leg_angle), 0]) {
-            square(size=[size*post_scale, size*post_scale], center=true);
-        }
-
-        // echo(str("x = ", post_scale*leg_length*cos(leg_angle+180)));
-        // echo(str("y = ", post_scale*leg_length*sin(leg_angle+180)));
-
-    
-    } else {
-        rotate([0, 0, leg_angle+180]) {
-            translate([-leg_length/2, -leg_width, 0]) {
-                // color([0, 255/255, 255/255]) {
-                    square(size=[leg_length, leg_width]);                
-                // }
-            }
-        }
-        square(size=[size, size], center=true);
     }
+    // pad
+    translate([post_scale*leg_length*cos(leg_angle), post_scale*leg_length*sin(leg_angle), 0]) {
+        square(size=[size*post_scale, size*post_scale], center=true);
+    }
+
+    // echo(str("x = ", post_scale*leg_length*cos(leg_angle+180)));
+    // echo(str("y = ", post_scale*leg_length*sin(leg_angle+180)));
 }
diff --git a/modules/idt.scad b/modules/idt.scad
index 2328cbf..209773e 100644
--- a/modules/idt.scad
+++ b/modules/idt.scad
@@ -27,7 +27,7 @@ module delay_line(lambda = 1, n_fingers = 1, finger_length = 50, gap = 0, thickn
         [b, l4*5-l4],
         [0, l4*5-l4]
     ];
-    // union () {
+    union () {
 
     translate([0, l2, 0]){
             for(i = [0:n_fingers]){
@@ -64,6 +64,6 @@ module delay_line(lambda = 1, n_fingers = 1, finger_length = 50, gap = 0, thickn
                 square(size=[l4+thickness, l4]);
             }
         }
-
+    }
     }
 }