So, Sunday night stayed at the Logan Hyatt, and Monday at the Boston Financial District Hyatt. Both rates were on the $158 gov't rate. My only incidentals were diamond Breakfast, which got removed. Taxes were also removed as I was on official government travel and presented suitable documentation. Base points theoretically should have been 790 (5 times 158) I got 762 and 758 respectively. I would never have detected the shortage if otherwise identical stays were not next to one another. What gives? Did backing out the taxes and breakfast somehow impact the $158 base upon which the base miles were calculated? The algorithm seems straightforward, and I do not know how it can get done incorrectly. Its just odd to me. And no, I'm not going to take my and customer service's time to correct so minor a shortage.