rough running 84 yamaha 115 hp outboard?

.I have a 1984 Yamaha 115 hp V4 that i recently got running again after several years. I went thru the carbs and cleaned them and all fuel delivery components check out. The motor runs but roughly and does not like to idle though it will at times with sputs and sputters. The spark plugs all fire as they should and vacuum lines seem fine. The only thing i can think of is maybe the timing is off. I was not around the motor ran so I do not know its condition before I got it. Any ideas?