Update on the problems:
This motor has never kept a firm "bulb" on the fuel line. I could pump it up before headed to fish and I'd have to pump it up at the boat ramp. The Yamaha's have a mesh fuel filter installed on the side of the motor. The bowl for that would always get 3/4" of air in the top. That's what I had to pump back full with the bulb.
I checked the synch on the carbs. They weren't in synch. They weren't terribly out but the bottom carb was open a little. I had synch'd the carbs when I cleaned them after buying the motor, but... I set them and then my fishing buddy looked inside and told me that the bottom carb was still a little open. I told him just to dive in and fix it while I was replacing the kill switch. He set them. I had pumped the bulb up last night when we quit working on it. I went back to the shop today to do more work on the boat to get ready for a road trip and the bowl on that filter was still completely full. So that leads me to another question. Would the bottom carb being barely cracked open, allow the fuel to drain from the filter bowl when the motor is stored at an angle, as in on a motor toter?
I also put one number hotter plugs in it. I read that if you do a lot of idling in a boat to drop a number on the plugs. Lower is hotter, I had originally thought higher was hotter but I was wrong.