Uh Oh -What happened to my bullet-proof movement?

[Tseg]

I've had my BLNR for 1 1/2 years and wear it 24/7. The variance and accuracy have been amazing, generally in the +1 to +2 SPD range. I sent in my watch to the RSC several months ago to get my cyclops/crystal replaced. It came back and immediately was at +5 SPD but after several days started slowing and after a little more than a week had settled into a +1 SPD range. All good.

Over a month later one afternoon it started to take off like a rocket:



I decided to reset the time and my watch tracker app and sure enough it has now locked in at +7 SPD for the past couple of days:



The bad news is it has sped up for no particular reason. I guess the good news is the variance remains amazingly stable. In fact it now seems to have less variance than when the avg. SPD was hanging around +1.

I'll probably "let it ride" for a few weeks to see if it self-corrects but at some point I guess I need to take it in to the AD to be regulated.

Anyone seen anything like this before? FYI, I have a anti-magnetic/degauzer machine and it appears to have made no impact.