Can you post a pic of one of the good locks? I just replaced my window locks on my Fiber Stream with a set of locks from Home Depot. The metal window replacement locks fit up perfectly. They are located near the sliding door repair/replacement hardware section on pegs- $3.49 Fit perfectly in the existing upper mounting hole but I needed to drill a new 1/8 pilot for the lower screw about 1/8 more towards interior. I'll post a pic later.