I'm in process of replacing a Sta-Rite Dura Glas pump motor, 1 hp. I noticed my old impeller had a chip on the side of it as shown below. I am wondering if it really needs to be replaced? I thought it would, but then when I got the new one out of the package I found what I think may be imperfections. So, now I'm wondering if the chip is not a big deal and I should go ahead and use the old impeller, return the new impeller? Thanks for help!