Hello, I am seeking advice about a vibration that has emerged while my 80-series LC is stopped with the engine running and in gear. At a cold strat with the vehicle in park or in gear there is no noticeable vibration. As the vehicle reaches operating temps an evident vibration develops when I come to a stop with the vehicle in gear. When I put the vehicle in park the vibration goes away, similarly if I put the center diff in neutral the vibration stops. I have crawled under the vehicle looking for broken exhaust or engine mounts but don't see that to be the problem. Because the vehicle is not moving I have elimiated the driveline as the source of the vibrations. While I was under the vehicle with a friend putting in and taking it out of gear I have noticed what seems to be a vibration through the transmission bell housing. I don't known much about automatic transmissions but it seems to shifting and operating fine while driving. When the transmission oil was last replaced it may have been over filled. When the vibration developed I checked the tranny fluid, which appeared to be high and I drained ~1-quart but that did not resolve the vibration. Any thoughts are appreciated.