I have done some mods to make life a little easier and more secure for the Piggies.
I tried putting a block under the long ramp to lessen the angle but I found it didn't matter in the long run. I have stapled some carpet to the ramps and added some hardboard bannisters to stop them falling and to give them a little personal security so that they don't feel exposed when on the long ramp.
Stiff carpet would do the same job, just keep an eye out for chewing.
Long ramp from the front of the pen
Long ramp from the top of the pen
Long ramp frome the side of the pen
I did notice that the small ramp was overhanging the central hole and that Dindy would slip her back leg into the gap between the ramp and the wall, (she has a wide rear) so I decided to shuffle the small ramp nearer to the side wall so that it wasn't overhanging the central hole and to close the gap that Dindy kept falling foul of.
You might notice if you look closely at the shelf that I have filled in the original holes and drilled a couple of new ones so that the small ramp could be shuffled up. I had a piece of plywood that I used to make a new short ramp with, so I decided to make it a little longer than the original and shaped the edge so that there was no gap between the ramp and wall. If I hadn't got that spare piece of plywood I would have just put a wider piece of carpet on and trimmed it to fill the side gap, the new carpet is quite stiff.
Short ramp from one side
Short ramp from the other side