I had a couple Lymans, both failed. I have a stand alone trickle Lyman and its been fine, shrug.
I took experience from Instrument Calibration from work and my method avoids the drift issue as I always know if its drifted and correct it without a device Calibration side track.
I have the scale pans marked with weight. Put it on and zero. Get a powder charge.
Pull it off and read the scale, if its shifted a tenth it ok, if it a couple of tenth (plus or minus) put the pan back on, zero before it dispenses and you are back to normal.
I have two of the small RCBS, one has gotten erratic dispensing a bit but works. The other works fine.
Also a Hornady, I hate the messy adjustments but it works good enough once you get them put in but hugely irritation to loose them each time you change a powder charge.