One problem I have with my Cougar 245RKS mid kitchen is it's rear weight bias, I have not weighed the axles separately but during heavy braking the front axles lock up too easily, no matter how I adjust the brake controller. My unit is relatively light which tends to aggravate the issue, when fully loaded it's not as noticeable.
Before our next trip I'm going to readjust the brakes maybe try lightening up on the front adjustment compared to the rear. It's a tad nose high as well so I'm going to try lowering via the hitch adjustment without getting it too close the bed rails.
On the whole though a rear kitchen is the perfect layout, more counter space, easy access when slide is in and we don't need a big picture window in the rear. Everyone we know that has a big window in the rear lounge units hates it. Way too drafty and cold in the winter and in the summer you have to keep the shades drawn when the sun is shining on it to keep from baking so you lose the whole advantage of the large window.
We have never lost a dish or glass...