Cory, on your roller bracket, some vendors Make just the ends because they get cut off. You can weld them back on to the existing bracket pieces. That’s what I did with mine! Less expensive route. Don G.
I took apart a water pump last week, and the impeller is not quite flush, the shaft is sticking out a small amount. I can get you a picture tomorrow. When you spin the pump by hand do you notice if it rubbing or anything. If you have access to a lathe the impeller removal tool is easy to make.