No further problems with oil pressure on the next three flights. I had noticed that the first two cylinder CHT's, #2 more so than #1, seemed to run 30 - 40 deg hotter than the other 4 cylinders, although still within range. I decided to remove the baffles in front of both #1 and #2. I simply drilled out the rivets; a prettier job will have to weight until I have the baffles out in order to fill the holes with viable rivets.