I have no expectation that when I pay for Long Arming services that this would be included, nor have I ever had anyone offer it as a service.

I have never had to do this on my quilts. If a quilt is loaded properly on to the machine and quilted with a balanced design there should be very little distortion. I always check quilts that I do for other people for square before I load them and I let the person know before I start, if the quilt isn't square so they can correct it or alow me to.

I would never put water on anyones quilt without their okay to do so.
peace