The suspension ride height could have something to do with that, it's something I personally haven't experienced with those beds, but i haven't used them extensively either, so, i'll have to look into it though, it could be the attacher joint is to low to the ground and causing the bed collisions to touch the ground. I could also just add some of those beds to the mod in the "beds" config and see if that helps.
Thanks for the Feedback.