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MakerBot Print is our newest print-prepration software, which supports native CAD files and STL assemblies,
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I just fitted this to a new V2. It fits with a few modifications to the required hardware and instruction. First off a warning, hold the extruder when removing the 3 Philips screws as it will fall in. Here are the changes along with pictures:
1- Use a tapered tool (I used a clay sculpting tool) to remove the bearing from the plastic shaft. Work it gently all around.
2- The black machined Allen that is used on the V1 does not exist on the V2. You will need:
1 M3x12mm Hex Cap Bolt
1 M3 Washer / or you can re-use the factory washer that was located on the pivot arm 2.5mm Allen
3- To install the bearing so that it aligns correctly with the hobbed gear install the washer UNDER the bearing and just snug everything up.

This design is far superior to the factory design as it completely eliminates the flex at the Bowden bracket. This helps at keeping the retraction consistent. Printed several tests in TPU without any issues. Thank You!