Guys- I am in the process of wet sanding my boat and I noticed the top of the motor cowl has some light oxidation. I know I can wet sand this, but my question is what grit would you recommend I start with? I have been doing the boat with 1000,1500,2000. Don’t want to take too much off by starting with 1000, if I should only use 2000. As always appreciate the help in advance.