Hi. I'm wondering if someone can help. I have fitted a mixer tap with shower attachment on my bath. When I use the tap the water mixes fine whilst coming out of the spout. However when I use the shower attachment I either get scalding hot water or stone cold water. The tap doesn't seem to mixing using the shower attachment but is fine when coming out of the spout. I get decent flow out of the shower head for hot and cold but as I say it just wont mix. My hot water is fed from a gas combi boiler and the cold is mains fed. Can anyone shed any light on what the issue may be? If the taps are at fault i'll remove them and get them replaced but don't want to do it if its not the taps at fault. It is driving me mad!!!