FLSUN SR Idler pulley stabilization

In English: (Deutsch weiter unten)

This is a stabilizer for the pulley below. I noticed that the deflection always had a negative influence on my prints. Since I have already developed and installed stabilizers on my other printers and have had very good experiences, I have also developed a solution for my SR. During the further implementation, I replaced the smooth deflection with a toothed belt pulley GT2.

ATTENTION!
The original smooth pulley has a hole of 6mm including a beech made by FLSun. If someone wants to use this further this construction must be adapted minimally. This construction here has the following new parts necessary:

Idler pulley: (needs 3 pieces)
https://www.amazon.de/gp/product/B07K8CXSWQ/ref=ppx_yo_dt_b_asin_title_o06_s00?ie=UTF8&th=1
Shoulder bolts: (requires 3 pieces)
https://www.amazon.de/gp/product/B07F8QPKY5/ref=ppx_yo_dt_b_asin_title_o03_s00?ie=UTF8&psc=1
An M4 nut is also required for the shoulder bolt.

My installation did not require any