Here's what a feeble attempt at the close joints looks like. The guy even cut tiles mid run to try to match the package. We had to tear it all out, cbu and all, install a 3/4" advantech subfloor on it, new cbu and tile.
I located some excellent lippage prevention devices last week. Will have to see if my old helper can make good use of them. One good thing about them is they are reusable, since the T tip is stainless steel. I'll report back if they work well or not. They are made for thin grout lines, which is what we most tried to achieve.
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