Called out for toilet not working correctly. Upon arrival, found toilet in master bathroom not flushing correctly. Found that bevel on flapper had broken off and fell into flush valve. Removed bevel piece and performed minor rebuild on toilet installing new fill valve and flapper. Tested for leaks. No leaks were found. Toilet is working how it should. Found water pressure in home is at almost 120 psi. Highly recommend having pressure regulator valve replaced. Also found tankless water heater from 2008. Recommend having water heater replaced as well. Cleaned work areas.