Cleared first clog affecting both bathrooms via 4” vent on roof. Tested system and found that bathroom near kitchen had a different clog. Attempted to clear clog via 2” roof vent but was unable to clear clog and got equipment stuck in drain leading me to believe there is a break in the line. Located with camera and was not able to get past tie in for mainline and kitchen sink in kitchen. Will need to return to dig this section up to perform repair. Performed spot repair in kitchen in order to remove clog and remove snake. After further inspection we found what appeared to be rocks in the sewer line, as well as large amounts of wipes and severe corrosion inside of drain. We also found that the 4” cast iron had several cracks throughout. Strongly recommended performing epoxy lining as well as jetting and descaling to address the issues with the sewer main but customer declined work.