Televised sewer from outside clean out. Downstream to city main is all pvc and looks in good condition. Upstream into house is cast iron and is showing signs of scale build up but pipe is in tact with no crack or missing pipe. Inspected toilet and the toilet does not flush well. Suggest replacing toilet with a Gerber Avalanche. If problem persists after toilet is replaced the cast should be descaled. Toilet is 12” to center.