I have a question for those of you with ace sliders. I am looking at getting the ace sliders and I can see there is a gap in between the 2 rails where if someone slipped using them as a step a foot could fall through them. I am not worried about me but I do have a 5 year old that would be stepping up into the jeep and getting down from the jeep using these as a step. Are they wide enough for a 5 year olds foot to fall through? I know the PSC rails (rocker knockers) are closed in and do not have the opening like the ace rails, but the price is right on the ace rails.