loose/creaky sidestep

[orlasttoy]

hi all...

my driver's side sidestep is annoying the hell out of me...it lets out a groaning creak whenever i step on it (and I'm not that heavy!!)

it's ONLY the step part under drvers door...

it's loose enoough that it's scraping the tube underneath which is starting to rust!

can i tighten the step or do i need to replace the whole tube?

here is the only pic where it is visible..

THANKS!