hi i am in need of help.i have twin evinrude 1998 90 hp .engines sat for about a year .both started up rough one got better and runs fine the other would not. i cleaned out the carbs but it back together with a repair kit and it still had some problems.here are the symptoms.in or out of the water in neutral i give it gas and cannot control the rpm.it will go up high and when i let the gas go it takes a few seconds to come down.in gear out of the water it will engage and run but in the water it will stall once put in gear and give some gas.any ideas would be very apprechiated