I have a 120 Evinrude '94 Model. The other day I had all kinds of power comming out of the hole, got to where I was going and idled around for 30 minutes. Then when I tried to take off again all the power was gone, even on top end it's not as fast as it should be. The only thing I can think of is I had mixed more oil in that normal. I ran that tank near empty and started over, but I'm getting the same thing. Yesterday I replaced the spark plugs and fuel filter, but I would like to hear what you all have to say before I take it in somewhere. Thanks.