Hi there, I hope this hasn't been asked too many times. I recently rehabbed a bathroom, including a new shower and the associated plumbing. It is just great. However, the water pressure in my kitchen has dropped significantly, like 70%, since the job was finished. I did not actually need to touch any of the kitchen plumbing during the course of the job, but did have to cut off the water supply from the basement. I believe that the cold water line for shower/ kitchen is shared, while they seem to have separate lines for hot (splits right at the hot water heater). Any thoughts would be great. I am a skilled DIYer, but clearly, not a plumber.