If you have the type that look like a ? mark, both Lowes & Home Depot have a drawer rail clip that isn't a left or right designation like the originals. They're also around $2 for a pack of two. The only thing I needed to do was take a hacksaw and knotch back the bottom leg of the ? mark about an inch. The rail slides in once this piece is removed. The best part is these clips are made way better than any of the replacement clips that are available through RV Parts stores and cost less than 1/3 their price. I bought 2 extra packs so when the next one breaks, and I know it will, I have the replacement at hand. I've replaced 3 sets so far. The originals don't hold up in cold weather and split across the bottom.
2007 Georgetown 370TS
aka - RAYNMKR