[DutchmenSport]

Welcome to the forums and congrats on getting your Montana. It sounds like you have a nice set up. Sounds wonderful!

About the shade, I can offer no help there. But I can give you a couple temporary quick fix suggestions.

Attach a large Command Hook on each side of the window and then use a wire or a thin extendable rod and in the hooks to hang a temporary curtain.

Another option, depending on your window configuration, valances, and every thing else, is to get a bath tub / shower curtain tension rod and simply hang a temporary curtain over it.

Meanwhile, you'll have a shade and this will give you some time to locate a new blind that fits and look right.

Again, welcome to the forums! Enjoy that Montana! Happy Camping!