After a few test flights there was another slight leak/seepage just below the exhaust port. I called DA and got the torque values for the engine. 100 in/lbs for the backplate and 95 in/lbs for the cylinder. I found two bolts in the cylinder and two in the backplate that needed significant tightening. This was after 5 flights so the need to torque the bolts was not a surprise. A few more flights showed only a very minor seep. OK with me.