I don't yet have a table saw (just starting out and learning quickly here), but did come by a nice, used sliding compound miter saw from a friend who no longer had a need for it.
The issue I'm running into is that cuts I make on wider boards (10" or so) have an inconsistent kerf width, so when I go to join two cuts together the don't fit squarely because that cut is inconsistent across its length. I've carefully observed the effect and noticed that the wider portion of the kerf is closer to me where blade has effectively gone through it twice: the first time when the blade first makes contact with the board and travels through it, and the second time when the opposite end of the blade finishes traveling through it as I push the saw back towards its docked position.
I've spent a lot of time trying to square up the entire saw, playing with the fence, the 90° angle, and best as I can tell (which may be limited) everything is pretty on the line. But this issue of a wider kerf on essentially half of the cut on all my boards is stopping me from really being able to put anything together.
What steps should I be taking to try and make these cuts clean?