Disposal/Sink Leak

Things almost always go better, or even best, the first time. That's where we get the concept of beginner's luck. I think I pay more attention the first time than I do later.

Well, I have a

That would be really hard to do, if you have an insinkerator or one they make, which is 80+ percent of them.

Get under there with a lamp and have someone do the water thing above.

Spread some news paper under the pipes; replicate the leaks and then check the paper for wet spots. This will help narrow the leak. It works great for a slow leak.

Check pipe connections for binding. Maybe something is cross threaded.

It Doesn't leak while the sink is filled and the stopper is in? Then you are probably correct, if the leak is coming from around that area of the unit. If it does leak when the sink is filled and the stopper is in, I think that would mean it is in the seam between the sink and the drain assembly since the 'quick connect thing' would be below that point. As others have suggested - get under there and be sure it isn't in the drain pipes past the unit itself. Those would leak more as the amount of water was increased. Just running the faucet and letting it flow down the drain isn't putting as much water down as the sudden rush of an emptying sink.