4 step stairs

[rapidrobert]

I had the same problem with the Sunnybrook we had before our Montana. Replaced it with a four step unit that I ordered from Camping World. Worked fine, all holes lined up perfectly with the new steps. The brand that they carried was the same as the one on the Sunnybrook.
I'd check on the brand on the Montana and see if you can get the same one with four steps to replace your's.