If you find a setting like yours, that works well, and stick to it

Sorry, I'm a total fraud, I Googled for help and didn't discover the (rough) settings myself

I agree about the luck part. Often my mousing [is that a real word?] doesn't resolve to the exact XYZ parameters that'd I'd like to try and add to that the power setting where all-bars-lit (or whatever you're trying to achieve) doesn't necessarily mean the same as the time before when it looked the same.