Same here. I had a set on my JKU and liked them so much they were day 1 mods on my JT.
You might try putting a thin rubber washer in between the slider and the mount point. Just something to fit snugly in there and keep those surfaces from rubbing.
). Plus they were easy to mount - their youtube instructions were spot on. 
Your pics really demonstrate their utility. I have the same set and put non-skid tape on the step parts. I have slid over logs on them and brushed a few rocks. Still loving them. Wish they were lighter but that would probably somewhat defeat the purpose. Bottom line, they provide excellent protection, are the first thing to contact without compromising ground clearance and are great steps (with the non-skid.)I have the RockHard 4x4's angled down. I had them Rhino lined. I love them and they are perfect. Full disclosure, I also had my ARB Bondi deluxe rhino lined and both match my Ace Upper Decker which I bought used - and already rhino lined. That is a LOT of rhino lining and some of you may think I am over doing it. But I live in MN and we love salt up here. Based on my previous experiences with rhino liner I am not expecting to deal with any rusting of visible surfaces from rockchips etc.
Back to the Rockhard 4x4's. The angled down versions make perfect steps - they don't stick down below anything underneath the vehicle. and they protect the pinch welds and they look great. And they stick out enough to protect me from parking lot idiots (helps when i am mall crawling
They are also strong as shit. Rockhard told my by phone that I should be OK using a hi-lift to jack up the vehicle from the slider. I believe them. They aren't saying "do it every day with a lawyer guaranteed safe pledge" - what they said is "our shit is build strong and thick and mounts in a bunch of places and assuming you aren't an idiot you will probably be OK if you have to do something dumb like that in a pinch on a trail..." - I am paraphrasing and I appreciate their honesty. Also I already used the slider as an anchor to winch my atv up a gully and it was great.
So - my full unpaid endorsement for the Rockhard 4x4's angled down. Their powerder coating was pretty nice and looked great. But I rhino lined them for grip and rust protection.
Staying at an AirBnB in Rochester and these pics are from a few mins ago looking down you can see how they dont' stick out past the fenders or wheels- you can also see how Rockhard curved them to match up to the body. From the side they look fine and cover the pinch welds nicely. Took the second pic because i rarely let anyone else drive it... 6MT so most people can't anyway. But my wife of 21 years CAN drive stick - heck that is why I married her!
