great pics and instructions. I had my seal pressed in by a machine shop and it also had a small dimple, so did the original. I think thats fine as long as it forms a tight seal, and most seals leak because of wear on the inner lips.

I had no leaks with mine.

By the way, is there a way to hook up the timing gear to any bolts on the rear so it work can work as a press while on the car, like the volvo tool?