A while back my vacuum pump on my 2011 Buick Regal 2.0 turbo grenaded. The engine just rolled over 60k In the process of looking for damage. it looks like the timing set took the worst of it. So far the hardest part to find believe it or not is the timing chain guide screw. I’ve looked on eBay and several other sites. Does anyone know where I can get one. Thank you.