V3.1 300m with RR toolhead belt tension:

Hi I am in the process of doing the MFBS hybrid mod for the v3.1 on my 300mm and i am tensioning the belts before attaching the hybrid belts and i am wondering if this graph is any good ,i have checked the tightness of all the bolts on the toolhead and the gantry seems square . any input gratefully appreciated thank you