I always seemed to have random, inaccurate cuts from my table saw. I'm talking like 1/32". Just enough to cause aggravation, but not terrible. What I discovered was that when I originally set up my table saw scale, I made test cuts, measured with my tape, then adjusted the hairline to my measurement. I could finally stop cutting to marks and just use the scale on the saw. Thing is, as time went on and I added new tape measures, the new tapes were not exact matches to the TS scale. That's what was causing the inaccurate cuts.
So, I carefully measured an off cut scrap, took it to HD and found a couple of new tape measures to match the measurement on the off cut. Now my cuts are consistent.
I never considered that tape measures would vary from tape to tape. Now I know. I also found that allowing the tape to snap back, eventually results in enough wear on the tape to cause inaccurate measurements. Now I'm more careful to be gentle my tape measures.