I usually don't run that slow either but a guy on that site AL owns posted ("899 help") a problem, it was windy & I was using the i-Pilot so I slowed it down - just noticed it on the last update - I loaded 7.08 from 6.74 and right after I gave about 8 qts. of blood to the skeeters performing the update, I came back in and I had an email about 7.09!
Never actually ran 7.08 except SIM for a few minutes while I was donating blood....LOL
I have a feeling it may be a combination of 200/83 and having the DI enhance set to low....
My buddy & I both have 899's and his didn't do it - and I set the chart to 2 on his - running 7.02 - same as my 899.
So basically I went from 6.74 to 7.09 and noticed it - same exact setting as displayed though - 12/10/low....
Running chart @ 1 or 3 & it goes away.
Mystic Pizza!

Thanks Kos!

RAS