Have unused set of triple curved steps for sale. these are the correct width for Montana.
http://www.strombergcarlson.com/pdf/SM-2410-39.pdf
they sell new for 219
I ended up using the double on my 2955RL,
the triple is too low when traveling,
entrance door on 2955rl is rear of axles
we'll work a deal to make it a bargain including shipping