I modified the idler body to feed filament straight through and get rid of the painful ptfe tube holder. I've designed this to work with these specific push fit connectors https://www.amazon.com/gp/product/B01IB81IHG/ref=oh_aui_detailpage_o06_s00?ie=UTF8&psc=1
The thread on it is set to match them but should work with others. I also set the channel up with funnels to prevent the filament from catching when inserted. I'm using the spanner hands filament containers with the backfeed prevention mod on them.
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