Mira excel replaced cartridge now tepid water. Installed approx 1998

Problem 1: constant dripping shower when set to off but still able to get hot running shower when in use. Solution: Changed 903.33 cartridge, greased rings, set for high pressure, set thermostat to about 2. Problem 1 solved (no dripping). Problem 2: Now only able to get warm running shower, not hot. Manual temperature dial turned to fully hot, still only warm shower coming through. Have you any suggestions of how to rectify this situation please?
Asked 6 years ago by Jeremy

Answered 6 years ago by Barrie Seabright

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