2020 Kawasaki Vulcan 900

The component I think that is faulty, is the, "shifter return spring." That component is believed to be apart of the power train system. With this spring being generally located inside of the power train itself, it call only be inspected when the power train is taken apart. A physical demonstration could be performed to show the defect in action. With me being unable to downshift, on demand as the operator is certainly a hazard to myself and all other vehicle operators. I definitely feel like a hazard to public safety and others while riding. The problem has not been reproduced or confirmed by a dealer as of yet. Since the warranty has expired, getting the issue looked at and or resolved, out of warranty will end in a costly repair. The vehicle has not been inspected by manufacturer, when I emailed Kawasaki directly about the issue and my concerns, they simply didn't show much interest into my concern, and just shoved me off to deal with my local Kawasaki Dealer/Shop. I then emailed my local shop about my concern before the warranty expired, no response was directly back to me. Leaving me to operate a motorcycle that has a down shifting defect. They are no lights or warnings present. Since the issue seems to me mechanical, but on the interior of the power train. The first event reference I have happened about a few months ago. It all of a sudden out of nowhere, stopped returning the shifter lever back to its neutral position when downshifting. I couldn't understand in that ve