Hi, I put a new shower dial and handle kit on. When removing the old handle the stem snapped. It is a symmons. I went to the plumbing store and got a new one. I put it in and now have no hot water or so little it feels cold. This may sound dumb but my hot water flow in all sinks is low pressure now. Thanks

Have you checked the aerator screens on the sinks to make sure they're clear? Cheersw, Tom