Sometimes we need to get a reed fixed, install a new set of valve or just try out a customized comb on an old Marine Band. Instead of throwing it out right away maybe you can send it to get repaired and save a few $$$ (less chances with a cracked wood comb)... I would like to share with you websites of the best harmonica technicians in the USA who will get your harmonica playable again.
HOHNER
Reach out to service.usa@khsmusic.com to get help with repair and parts.
Mike "Fathead" Easton (Pennsylvania)

Mr Easton has been in the harmonica repair business since 2000. You can order from his website custom combs for Hohner chromatic harmonicas, ask for restoration and various repair services.
George Miklas (Virginia)
George Miklas is a diatonic and chromatic harmonica player who repairs Hohner as well as other harmonica brands.
Dick Gardner - Legendary Harmonica Player (Minnesota)
Dick Gardner was Toots Thielemans harp technician who took care of Thielemans Hohner Mellow Tone and Hard Bopper among other models.