Doing some initial prepping for paint on the 80 series this last weekend. This is my first time doing body/paint work on a vehicle. Wanted to get some guidance on removing/filling the small stuff, such as paint scratches, basically where the metal is fine, but there are imperfections. For instance, my rig has a line where the fender flares meet the body (pictured below--I am going flares off). I was sanding it down with 150 and I am just not sure if that is the best way to go in knocking down the raised old paint/clearcoat. Then, on the filling/smoothing side what are you guys using on the small stuff? Should I use a filler, or just prime it with multiple coats and then block sand it?