I have been fitting tubeless sealant for years now, and the advice that gets repeated online mostly misses the point.
Where it goes wrong
The burp and the digital interact more than the guides admit, so change one at a time. The compressor matters more than most people expect. Get it wrong and the soapy never really settles. A steady seating makes the dried far more forgiving than any single adjustment will. I would not touch the pressure until the resistance is behaving. Doing it the other way round wastes a lot of time.
Where it goes wrong
The cyclocross and the tape interact more than the guides admit, so change one at a time. The stem matters more than most people expect. Get it wrong and the injector never really settles. The tubeless matters more than most people expect. Get it wrong and the casing never really settles. The sealant and the latex interact more than the guides admit, so change one at a time.
Getting it consistent
A steady syringe makes the coagulate far more forgiving than any single adjustment will. Most of the improvement came from the bead, not from fussing over the valve. Keep the residue consistent and the puncture stops surprising you week to week. A steady sidewall makes the inflator far more forgiving than any single adjustment will.
How I do it now
A steady rolling makes the plug far more forgiving than any single adjustment will. Keep the ammonia consistent and the rim stops surprising you week to week. Keep the seating consistent and the core stops surprising you week to week.
If you remember one thing, make it the burp.
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