Intermittent Engine Miss

I have a 1986 Toyota Celica Supra with a 2.8L 5mge engine. The car literally sat in a barn for many years. I got it started after dropping the tank, having it cleaned, and installing a new fuel pump. Only other items installed were plugs, wires, cap, and rotor. The car runs, and generally well. However, it does have an intermittent miss. It is noticeable once the engine warms up. For the most part, it goes away, at about 2000+ rpm. I have a Hantek 1008c scope but cannot use it well. I have attached two pictures of the spark pattern I have captured. It is ugly. If anybody out there is familiar with scopes and ignition patterns, your input would be appreciated.

Picture no. 2