340 damage dilemma
I'm not reading all that, but if you THINK there aren't machines and tooling out there that will cut a thick wall sleeve in one cut you're nuts.
Like I posted, I billed it out separately. You can bill the way you want.
To try and make out setting a sleeve as this big, time consuming project is silly.
If you are half assed good you can set a sleeve, top it and file it flat and not surface the block. Done it many times.
Don't make it out to be a big science project.