I have the '89 5.7 liter mercruiser in my boat, the pulleys have become corroded and worn causing the belts to prematurely wear and leave fine black shavings all over the bilge. I want to remove the pulleys and sand them down and paint them up. How hard is it to remove them. I know the power steering pulley is a press on. I think the alternator and circulating pump are bolt on. and what about the pulley over the harmonic balancer? is that bolt on as well ? I was thinkin some sanding and a highgrade paint might do the trick. what do you guys think ?