We remodeled the guest bathroom about 6 months ago and the master bathroom less than 1 month ago. We had the same Delta Multichoice Valve body installed in both. 2 months ago the tub faucet only ran cold even with the valve set to the hottest temperature. We called a plumber who found the cartridge was at fault and replaced it, charged over $200. Yesterday the shower faucet in the master bathroom only ran cold. We began by adjusting the hot water stop to the most counterclockwise position but the water still ran cold. I called Delta and they will be sending a replacement cartridge which should arrive in a week or so. Although I'm glad they will be honoring their warranty I would have preferred that the units did not fail so quickly.