That is a band aid. I sent that to my friend saying I think we fixed it and just need a little lapping compound.
Lucky that's all that failed! Anyone... and I mean anyone... that runs that kind of HP and doesn't know any better than to put cheap gas into the tank, has either more money than sense or no sense at all. I know it, and I'm N/A.
As for running 93 in everything you have, that is nothing but nonsense IMHO and a waste of money if it doesn't need it. Back in 1998, I had a 1996 4x4 GMC with a V8. I thought, why not run 91? it will be good for it! Long story short, I was lucky. It acted up after about a year, and the dealership asked me what I was running in it. I proudly told them 91, and they said, "This is built for 87, not 91. Switch to 87, with any luck this will clear up." Took about 4 tanks, but it ran so much better on 87. I'm thinking they said something about not burning right and plugging up the CAT, but it's been 20 years so I'm not positive about that.
I now run what is recommended. My 2015 Impala says in the manual it will run fine on 87. It will also run better on 91 or higher, but it's designed for that. I assume it retards the timing to reduce ping on the 87. I'm fine with that, it has over 300 HP and runs great for what I need it to do. My Harley and the Slingshot however, recommend 91 or higher. So, I try for 93 (or highest I can get), as there is likely some 87 in the hose from the last person that needs to be made up for. I have bought 91 when I was really low, and out in the boonies, and had it ping a little before The SS adjusted for it. The SS (mine) doesn't like crap gas, and it (at least for mine) does very well if you just put what they suggest into it.
Rant over. Sorry Kyle, wasn't directed at you. I really try to get along with the troll, thinking he just doesn't know better (benefit of the doubt). Sometimes, even I get sucked in.