K-1357 kohler whirlpool tub there is leaking only when the tub is filled and drained. when taking showers there are no leaks. this unit has been recently installed within the last week

You say that it doesn't leak during showers. The next step is to plug the drain 100% so no water will drain thru the drain assembly. Fill the unit up to just below the overflow drain and leave overnight to see if it could be leaking from the outside of the drain plug assembly or leaking from the jets/drain from the whirlpool feature. If was just recently installed was it professionally installed. Should be covered by warranty.Try this then if its not determined what the cause we will go to the next level of investigating what it could be.in it peak all around to see where the water is comming from. Use a flashlite so your not kneeling in mosture with a electrical light in your hand!!! Good Luck!
You say that it doesn't leak during showers. The next step is to plug the drain 100% so no water will drain thru the drain assembly. Fill the unit up to just below the overflow drain and leave overnight to see if it could be leaking from the outside of the drain plug assembly or leaking from the jets/drain from the whirlpool feature. If was just recently installed was it professionally installed. Should be covered by warranty.Try this then if its not determined what the cause we will go to the next level of investigating what it could be.in it peak all around to see where the water is comming from. Use a flashlite so your not kneeling in mosture with a electrical light in your hand!!! Good Luck!