According to Clays Guides, Lightning Rust Remover is the way to go to get rid of rust, and make lockdown bars and legs look like new. A few more tips were given as follows

1) “The Must For Rust” from Home Depot can also be used

2) Make sure you buy a plastic wallpaper trough long enough to accomodate a leg

3)
Real Products Mfg., Ltd.
3480 State Route 15
Ney, OH 43549
1-800-659-2459 Fax: 419-658-2334
www.realproductsmfg.com