My experience is that it's hard to get right, messes with crop rotation and lower yield.
I've had beans overtaking the maize and I've had squash overtaking the beans.
YMMV.
I've had beans overtaking the maize and I've had squash overtaking the beans.
YMMV.
I haven't tried it in my garden but it does seem to have downsides as a system. I'm not all that excited to try it.
Were you trying it with no-till methods?
What about integrated pest control?
Knowing that, wouldn’t you substitute beans with a different nitrogen-fixer at an open canopy slot?
Or even, different varieties of beans?