Anet A8 Bowden Mount HEFTY

I love the DocWho11 version for the Bowden extruder. It's compact, light, and supports a chain. However, it didn't print out very well for me. I had an issue with the duct being too thin. It had gaps where the air would easily escape before reaching the end. Also, the fan cover where the chain connected broke inserting the first link. For the blower I was using, the upper left bolt aligned perfectly ... however, there was no matching lower right bolt. My chain puts some stress here, and I