Soft floor discussion (pics and steps to fix included)

Sorry, I can't see the video at work. The steps should also be attached to the frame for strength. When replacing our steps I used lag bolts onto the wood above, self-tapping screws into the frame and will be welding for added strength (it was welded from the factory). The majority of the strength should be coming from the frame mount and I used the lag bolts to really just hold the new steps in lace before I attached to steel.