[Richard]

I don’t have hands on knowledge of either situation. But let’s start with the location and how to access. I would start with which direction does the sliding floor move? Why, this seems obvious, but I have seen those that move in and out from the center of the coach, and a few that retracted sideways to the front or back of the coach.

If it moves to the center, then go in from the opposite side and start removing the ceiling in the basement. That is the only way to access.

If it slides under the kitchen counters , only then is the access through the hatch in the cabinets.