Y belt attachment with blockers

Config/Dual skr Pico/mainsail.cfg

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+[virtual_sdcard]
+path: /home/pi/gcode_files
+
+[pause_resume]
+
+[display_status]
+
+[gcode_macro CANCEL_PRINT]
+description: Cancel the actual running print
+rename_existing: CANCEL_PRINT_BASE
+gcode:
+    TURN_OFF_HEATERS
+    CANCEL_PRINT_BASE
+
+[gcode_macro PAUSE]
+description: Pause the actual running print
+rename_existing: PAUSE_BASE
+# change this if you need more or less extrusion
+variable_extrude: 1.0
+gcode:
+    ##### read E from pause macro #####
+    {% set E = printer["gcode_macro PAUSE"].extrude|float %}
+    ##### set park positon for x and y #####
+    # default is your max posion from your printer.cfg
+    {% set x_park = printer.toolhead.axis_maximum.x|float - 5.0 %}
+    {% set y_park = printer.toolhead.axis_maximum.y|float - 5.0 %}
+    ##### calculate save lift position #####
+    {% set max_z = printer.toolhead.axis_maximum.z|float %}
+    {% set act_z = printer.toolhead.position.z|float %}
+    {% if act_z < (max_z - 2.0) %}
+        {% set z_safe = 2.0 %}
+    {% else %}
+        {% set z_safe = max_z - act_z %}
+    {% endif %}
+    ##### end of definitions #####
+    PAUSE_BASE
+    G91
+    {% if printer.extruder.can_extrude|lower == 'true' %}
+      G1 E-{E} F2100
+    {% else %}
+      {action_respond_info("Extruder not hot enough")}
+    {% endif %}
+    {% if "xyz" in printer.toolhead.homed_axes %}
+      G1 Z{z_safe} F900
+      G90
+      G1 X{x_park} Y{y_park} F6000
+    {% else %}
+      {action_respond_info("Printer not homed")}
+    {% endif %} 
+
+[gcode_macro RESUME]
+description: Resume the actual running print
+rename_existing: RESUME_BASE
+gcode:
+    ##### read E from pause macro #####
+    {% set E = printer["gcode_macro PAUSE"].extrude|float %}
+    #### get VELOCITY parameter if specified ####
+    {% if 'VELOCITY' in params|upper %}
+      {% set get_params = ('VELOCITY=' + params.VELOCITY)  %}
+    {%else %}
+      {% set get_params = "" %}
+    {% endif %}
+    ##### end of definitions #####
+    {% if printer.extruder.can_extrude|lower == 'true' %}
+      G91
+      G1 E{E} F2100
+    {% else %}
+      {action_respond_info("Extruder not hot enough")}
+    {% endif %}  
+    RESUME_BASE {get_params}