PrintrBot Metal Plus NinjaFlex mod

My mod of dubi's PrintrBot Metal NinjaFlex adapter (http://www.thingiverse.com/thing:439617) to work with a Printrbot Metal Plus. Use a razor blade to thin the curvature that fits under the tooth gear if needed. Provided non cut hole version for those who want to print without supports and use a razor blade to make any additional modifications.

Recommendation if the filament still buckles, try slowing your print speed. I am currently printing at 8-10 for the ninjaflex filament and have had no issues for over a month.