The next thing for you to check is the fill valve itself, make sure it is shutting off. shut off the water to the toilet and see if the leak stops after a few minutes. it may also be a leaking gasket on the flush valve gasket. also be sure the flapper area is clean. hope this helps. let me know if you need anything else.
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The next thing for you to check is the fill valve itself, make sure it is shutting off. shut off the water to the toilet and see if the leak stops after a few minutes. it may also be a leaking gasket on the flush valve gasket. also be sure the flapper area is clean. hope this helps. let me know if you need anything else.