Arrived at location on 1/28/22 - Reported on Wednesday kept filling and dishes have been spotty. Found pin hole in exit side tubing from rinse aid pump to manifold. Cut tubing back and reconnected. Chemical pumped good. Could not find any issue with filling. Could have been a stuck float or debri in valve that passed through. Floats are clean at time of service. Had gotten a message from chad about drain plunger being pushed down too far. Could not duplicate. O ring in tact and seems to be holding. Could of had debri on oring as well. Told staff to keep an eye on it and let us know if issue occurs again.