I don't believe anyone here would say anything like "I told ya so"!
Certainly not me! It's just that it happened to me and I'm passing on my experience.
I love this forum because people share their experiences.
The only dumb question is the unasked question.
I hope everything works out in your favor.
To me, the shop mechanics tend to go big because it means more revenue,
even if it doesn't fix the original problem so, I tend to start small & go from there.
Greg