I have a 1991 40hp Evinrude outboard and I what to change the prop anode and seals. I am mechanicly inclined and have tackled other routine maintenance and repairs on the engine already. I am wondering if this jod may be to difficult, or if there are any special tools\pullers required for the job. I have a Clymer shop manual, but it seems a little vague in reguards to a prop seal change. Please advise.