The Express was never supposed to be a Wingmaster. Only issue I have seen was rough chambers, easily solved with a brake cylinder hone. Wrapping steel wool around a brush isn't polishing, it's burnishing, and if you have any ridges it's no help. I have also seen Mossbergs, Novas, and even BPSs being beat on the ground with the new cheaper shells. I am afraid I do not trust "gunsmiths'" evaluations involving guns belonging to people who are not knowledgeable. Sort of like the women and car mechanics scenario.
If you shop at Safeway or Albertsons get set for a shock. Cerberus Capital Management owns them too.