"Old Guy Scott" shows more lead work. Any edges must be leaded in order to hold up as a permanent fix. See photos showing lead stick work and vixon file work. This is how you make a perfect tail light fit. "Old Guy Scott" uses a polyester primer filler coating, because it sticks really well and block sands easily. Striping to bare metal and proper metal preping is always a must in order to have an excellent result. See photos.