It all makes sense to me now. I was doing the lookback from the beginning of the block before each flight. I forgot that you must look at the time the block is forcasted to end and do the lookback from that time. When I did that I have 7:57 and 7:55 for my last two legs on the day following the reduced rest. It's a 3 day trip that ends around 2:30 and I don't report in domicile until 6:30 the next morning. So I have plenty of compensatory rest.