Thanks, I am aware of that and it is reasonable to me. BUT 3mm deflection worries me a lot, especially if the seller said item is perfect condition for use.
I don't want to make a big deal if it isn't necessary so the question is 3mm deflection over 1440mm lenght is considered ok or very bad ?
How were your mounting experiences with longer rails ? where they perfect straight ? I was looking at the rails again, and some of them have uniform deflection over the entire lenght - like smooth curve, but others have just a bend from where the rails go straight- like a flat V instead of a curve.
The deformation is heightwise also, not just in only one plane. |