I reduced the height of the rehaut slightly and re-finished the inner wall (sanded) to reduce reflections. You can't take too much off the inner as it will also expand the dial seat, if you do the dial will fall through.
The the addition of a GS PA 462-66 crystal from Ofrei helped too. Some crystals, i.e. the T19 from Clark, have the effect of distorting the rehaut width. I would avoid them. The high-dome T19 crystal (CWPT19) from Michael Young would be another option, it actually reduces the width of the rehaut optically. However, they do tend to fracture easily around the base when fitted and they aren't cheap. Take a look at the fourth post in the link below:
No it shouldn't, the rehaut should be 90° to the dial face. But with the a little effort it’s not so noticeable.