My 2016 375 FL always had a sluggish kitchen slide that clunked as it was within a foot of closing. I am on my third warranty dealer. Today I visited for the first time since February while it is still waiting for Owner Relations expedited parts. The mechanic showed me he finally found the issue which was the motor mounted incorrectly and a cable riding on the motor causing the twang. It moved just like the other 3 slides today! Finally Tangless! I still am in hopes of getting it back by June when the warranty is over as Keystone is terrible on supplying parts for a unit less than a year old.