Thanks for your feedback, Dan. We want your WM3400CW washer to run smoothly and reliably. Excessive vibration and water leakage can often be resolved with a few setup checks. Violent shaking may be caused by shipping bolts still being in place, an unbalanced load, or an uneven floor. Water leaks are commonly due to door seal issues or incorrect detergent use. Here are some steps to help: Vibration Troubleshooting ⦁ Remove shipping bolts: These must be taken out before use. Check the back of the unit. ⦁ Level the washer: Use a level tool and adjust the feet to ensure the washer is stable. ⦁ Balance the load: Mix large and small items evenly and avoid overloading. More vibration tips: https://www.lg.com/us/support/help-library/lg-washing-machine-troubleshooting-washer-vibration-issues--20152349186279TWW Leak Troubleshooting ⦁ Inspect the door gasket: Wipe it clean and check for debris or damage. ⦁ Use HE detergent: Excess suds from regular detergent can cause leaks. ⦁ Check hose connections: Ensure inlet and drain hoses are tightly secured. More leak guidance: https://www.lg.com/us/support/help-library/lg-washer-why-is-my-front-load-washing-machine-leaking--1431986512448 If the issue continues, please email us at lgdigitalcare@lg.sprinklrsupport.com so we can assist further. – LG Digital Care Team ^Rich