Arrived at location on 3/30/22 - Unit has bad draw off valve stem unit is operational but requires part. Returned to location on 4/11/22 - Removed draw off valve assembly from right kettle. Had hard time removing draw off stem from retainer. Installed new stem. Put some grease on threads. Installed onto fight kettle. Had a hard time tightening the stem. Stem is very hard to turn. Spoke to Larry. Said to order a new retainer. Will obtain new and return. Must call Larry for return. Larry said not to QWP but needs it by 04/29/22. Returned to location on 4/13/22 - Arrived to location and spoke to maintenance personnel. Disassembled stem from retainer and installed new. Reassembled in unit and tested fit and function. Unit is back service.