Manual Driver Seat Slide Broke

[rasher]

The manual slide mechanism on my seat broke last year, some flimsy plastic peice, I'm sure it breaks all of the time. At the time, it looked like I was going to have to buy a whole new seat which is ridiculous to me. At the time, I just shot a couple of screws through the slide rails to lock the seat in place.
Anyone know where I can find a new plastic slide lock mechanism for a reasonable price, or are there any other fixes available?
Thanks in advance for any help.