I have had what I percieved as "Problems" with Blackstone. they run a high volume and most of their busness is fleet trucks, so when you are sending in an oil sample from a motorcycle, one that only had 500 miles on the oil, there are bound to be slight discrepancies.
I am thinking that you should run another 500 miles on new oil and compare the results. I am thinking that the Sea Foam may have scoured the deposits off of the case walls, also it is of a different make up so it may have changed the viscosity tests.
I may send in a sample from my Sabre just to see what it looks like as I have a bottle sitting here for my truck in a few months.
If you make it up to the Page area look me up, I'll go ride with you.