If you've ever had a project go sideways after selecting a lower cost sub contractor, you'll know that sometimes paying more is worth it in the long run.
And this is where I was at. I took up the attitude that i do not want, and if done right, I will never have to worry about mitigating tin worm again on this 40. I'm still not going to be driving it in salt and winter slop, so it should be usable until I'm not, and after that I don't care