We got our SE yesterday. Unfortunately there were these black plastic washers installed under the slingshot posts. Looks not really nice so we thought of an alternative.
We have produces a laser cut 2mm plexiglas which can be installed under the posts - from our point of view it spreads the pressure better than those washers.
It fits perfect with a playfield protector.
At this time we can not really tell if it helps but we keep you posted.
If wanted we can offer this solution but without any waranty regarding an improvement and also without any waranty regarding potential playfield damages.