Customer had rocking toilet. Pulled the toilet and found a crack in the flange (picture attached). Replaced the flange with an ID gasket flange. Mounted with four points of contact and brought it up to the proper level. Seated the existing toilet properly and tested with around 10 flushes with and without paper to ensure a proper flush. Reconnected the water line and ensure no leak at base. Customer wanted to flush gas, tank styler water heater. Due to the age of the heater this isn’t recommended and replacement is necessary due to the age. Quite attached to replace.