I attach 2 thin grinding disc to my dremel and enlarge the dial portion of the case ever so slightly. Needless to say you have to be very focused, and don't rush it. Hope this helps
If the sa 3135 breaks, who will fix it? Certfied rolex repair shops won't touch it. Watch makers can not get parts. That said, it's still very cool movement, I think worth the risk at $400 plus.
Very hard to find. You might try Dallas Gold & Silver. They have a large selection of gen parts. If you call, use the fairchilds selection on the prompt. Good luck