Got my FLSun SR, set it up and now working on getting reliable, repeatable and very dimensionally correct prints. I’m using the Vector3D Califlower mk2 test print and calculator to adjust for dimensional accuracy. It is well worth the $13, see: https://vector3d.shop/products/califlower-calibration-tool-mk2 Given low price tag, I would say the only low point is rough spool holder which can be quickly corrected with this spool roller: https://www.thingiverse.com/thing:6856884 thingiverse.com/thing:6856884