Thanks for the info concerning the THR_MIN setting. I will be setting that to zero when I get back to flying - I prefer the props to stay still until I TELL them to rotate - that way fingers don't get whacked up (I,too, speak from experience on that!).
I also appreciate unmannedtech's comments about the THR_MAX parameter setting - when I originally powered up with the APM 2.8 version 3.2.1 it seemed the motors didn't spin up very high - at least not as high as they did with the older APM 2.5 module. I was indoors at the time so I didn't actually get lift-off, but it seemed they were a little sluggish.
Will have to check that param and set it higher if it is at 80.
Doing major remodeling on our house and drones have slid way down on the priority list lately, but hope to get back to flying soon.