(Remix) Tracer 9 GT Chain Slack Jig

I really loved the original idea, so simple and effective. But I noticed the OG measures from the chainguard down to the top of the chain. Yamaha manual instructs you to measure 45-50mm to the middle of the chain while pushing down on it.
I adapted the 46mm design to measure the correct distance.
The 3D printed spring tensions the chain down, instead of having to push the chain down with a finger. Adjust the chain tension until the edge of the side pieces lines up with the center of the chain.

Printing instructions: 
Prints with tree supports on buildplate only.
Use PETG as PLA is too stiff and will likely crack (at the spring)