With the higher lift we use the side-step below the sliding door quite a bit while camping. After crawling under the van I discovered that all tubes from the step are just welded on the bottom and had no strength on the top. Not really ideal, so I took it of and brought it to Metal & Wood Products to get their opinion on it. After a couple of days they made the whole step stronger and reduced the flex.
Another problem was the rust. I already knew from our old van, that the side step can rust quite fast due the rock-chips from the front wheel (even with mud flaps). Therefore I cleaned and sanded it properly and used a few coats of black rocker guard as protection. The hardware is now also stainless steel. We will see how good it holds up.