Sometimes when painting with a roller it feels like instead of the roller being circular in the cross-section, it is an oval. Or perhaps the paint is loaded unevenly? I have been loading paint from a tray but dipping it in the paint and then rolling it on the raised part of the tray.
When I move the roller on the wall, I can feel the unevenness although there is little visible difference in the paint applied.
Am I doing something wrong?