Had a good plink with the new Innova today after fitting a standard pump handle, then rubbed down with fine wire wool.
I also retro fitted a mk2 safety, it is very basic but I like it. I cleaned the grease out of the cylinder and lubricated the pivot points with secret sauce.
I need to adjust the pump rod to make the handle close a bit firmer and it felt a bit weak on 4 pumps.