Shout out from Indiana, USA

I have been a fan of yours for a long time. I am an experienced woodturner and active in our local club ( Your live demos are great. I always like to teach others and I realize you have a mixed audience. I like the way you describe what you are doing, the type of cuts you make, your coloring techniques etc. Keep up the detailed explanations. I like your work.
A question that I have is you frequently start a cut and stop to adjust the tool rest height. You sometimes do this several times. My question is how do you detect that the height isn’t “right”? I get that you visually try to set it, but a lot of times you just stop and change it. Can you “feel” it isn’t right buy the cut? I have tried to determine the differences of feel on tool rest height and I can’t notice anything.