Moving along with the ‘67 evinrude 9.5 I’ve cleaned and rebuilt the carb (I was lazy and spray cleaned the orifices throughly), installed a 9.9 fuel pump and new fuel lines, new impeller, Didn’t test coils because the looked okay and I was getting good spark on both cylinders, cleaned and adjusted points. When I ran it in the test tank it was idling great pumping water great revving up fine until I put it into drive and tested it at full throttle it would bog down sometimes almost where it would die and then rev back up and then idle back down. I tried to take a video with it in neutral and you can hear the Rpms fluctuating at full throttle. I re checked my float and it looked leveled as it should be. It seems like a fuel issue to me but I’m not sure exactly. I also thought exhaust leak but it does this with the hood off too. The gas was brand new from that morning mixed 50:1