A better gription hub
thingiverse
This is just a different hub setup that gives it a firmer grip, I use an aluminum center mount on the servo https://www.amazon.com/Seamuing-Aluminum-Futaba-Mechanical-Helicopter/dp/B07D56FVK5/ref=sr_1_11?crid=27E4B2RNJRBVN&keywords=aluminum+servo+horn&qid=1673501316&s=instant-video&sprefix=aluminum+servo+horn%2Cinstant-video%2C344&sr=1-11
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