Arrived at location on 5/31/22 - Unit not in use upon arrival - customer states that the unit is jumping from thin cut to thick cut - check up unit. Gasket and the knob is strip or worn out - unit needs new gauge kit - will obtain parts and return Returned to location on 6/6/22 - Unit needs new know gauge kit - dismantle old knob and install a new one - test unit and slice lettuce - unit operational