so I have a 2yr old simplicity zt3500 mower in which I love and have no issues except this one. on the vertical walls (both sides and back) the paint is coming off. it starts at the bottom and works it's way up. it's like the paint never baked on or adhered good. This is a little upsetting to me. what's the best way to repair this issue. should I wire wheel brush or flap disc this loose stuff off with a grinder and then cover it with some good quality spray paint or go another route. your opinions are needed...thank you....