Got the new ramps yesterday and it's not going to plan. The old ones don't just unbolt. They have two sheet metal screws (3 holes but only 2 screws) at the inner edge at the thickest part of the ramp. Then, there are two "rivets" toward the back that go into counter bored holes, so the head is flush with the surface of the ramp.
Of course you can't easily see these, buried in the back, so in the process of pulling on the first ramp to extract it, I broke the ramp in two pieces, side to side, right down the middle.
The rear half is still attached in the back with the rivets. I could probably use a sharp, high quality putty knife to drive under the rivets and cut them in half but short of pulling the entire slide out of the coach (NOT HAPPENING) I don't see any way to replace them when I install the new ramps.
As a side note, just like most things these days, the new ramps are not nearly the quality of the old one, big surprise there.