I've Been looking for a metal hole saw but all I can seem to find is one that cuts 1" or bigger. The holes I need are 3/4, will a 1" hole make a difference when installing through hull fittings? I don't like the idea of having a 1/4' gap in them, I know I can fill it with silicone but it's just the thought of having a bigger hole than what I need. (I'm a little OCD) [-X