It's all good , been through those scenarios and like I said it's a great unit.I like to set the Autotrickler to 0.02 below the target and that helps. The charge is almost always within +/- 0.05 gr of the target.
Sometimes the chargemaster would be dead on what it read, and the next charge would be nearly 0.2 higher than what it read.
Probably doesn't make much difference, I just like to know that they're good
I'm in the ButterBean club, didn't see any differences in ES and SD numbers or accuracy.