when our RV microwave died the other year, we went to walmart bought one that was the closest size, and put it in. it works great when we are plugged in to power. it does not like running off the generator. i have never worried about the turn-table plate inside bouncing around. but then overall with our ride I don't worry about too much bouncing around that is in the front or center of the rig, only the tail end gets some good bounces. We ride with a Pampered Chef pizza stone in the over and it is fine also.