The Sierra Ringers and the Bell Cases hand bell choirs will give a concert at 2 p.m. Sunday at the Carson Valley United Methodist Church, 1375 Centerville Lane, Gardnerville.The Sierra Ringers (the adult choir) will be fresh from their participation in the Spring Ring-a day of ringing and learning in Reno. This regional event hones the skills of ringers and brings many choirs together from Northern California and Nevada for a massed bell choir concert.The Bell Cases (the youth choir) have been working hard on more complicated pieces and are excited to showcase their skills.Both choirs are directed by Kathy …