[Scale changing 0.2gn]

Phones make a big difference to this scale, mine was wandering +/- .5grains I was ready to throw it out until I read about phones etc., now keep it a metre or so away and all is well.

So if you use your iPad etc for storing/recording load data keep it well out of the way.

[Moving from SS to Progressive]

I have the LNLAP,  I resize and decap first then clean, I then put my flaring die in #1, Powder (with PTX) in #2, Powder cop in #3, Bullet feeder in #4, Seat/crimp in #5.

I wasn't using #1 and found like you the cases stuck on the PTX. Preflaring reduces this significantly, I suppose I could take out the PTX now, but it seems to work so I'm leaving it alone.

[Moving from SS to Progressive]

Have look here https://forums.brianenos.com/topic/283615-hornady-lnl-ap-powder-jump-fix/

I have replaced mine with a similar o-ring ( can't get exact one here in Australia) does the trick perfectly.

If you can't get the exact one get a slightly thinner o-ring.

I tried moving the ball bearings made things worse rather than better for me, I had to adjust the pawls ever so slightly to advance correctly.