You could give Customer Service a call but I'm not sure they are accepting any work right now due to backlogs etc. Be sure to have your model number and serial number ready if/when you call. They will need this info.
The other problem is, their preferred repair methods nowadays involve installation of new parts instead of repairing the existing components, and I don't believe they would have any remaining forged/case hardened parts available to use in your revolver to repair this condition.
If you have a trained, trusted gunsmith in your area, he should be able to repair this issue in no time, without the need for any new parts, as long as the existing hammer/trigger are not damaged. If it's a matter of the parts suffering normal wear and tear, the repair procedure involves re-sharpening the bevel on the trigger. The armorers school teaches a very easy bench-top method for doing this repair that takes just a few minutes, and restores the trigger hammer interface to good as new condition. Your experienced gunsmith should be familiar with this procedure.
The other option would be to try to find a S&W trained revolver armorer in your area. They would be able to diagnose and repair this condition in no time.