Replacement belts for Amstrad CF floppy drives

Thanks to another cctalk-er, I've discovered an inexpensive replacement for the dreaded neoprene belt in Amstrad 3" CF drives. There's a product called "Plastibands" available at many office supply stores (or on Amazon.com) that are intended as a replacement for traditional rubber bands. They're made of polyurethane and have a considerable amount of "stretch"--and, the best part, don't disintegrate quickly. I slipped one of the 2" x 1/8" bands on my CF drive and it works like charm--plenty "grippy". A box of 100 on Amazon runs less than $5.00. That should keep you and your best friends in drive belts nearly forever. There's also a larger 4" x 1/4" size. The $64,000 question is "Can these be used as a replacement for the band in DC-600-ish QIC carts? My initial experimentation with the 2" model in a DC-2000 cart is "not quite"--the QIC application requires a bit of slip, which these don't appear to have--they're a bit too "grippy". However, I'm going to tumble a few in some molybdenium disulfide powder for a few days to see if a "slip" can be imparted to them. Stay tuned... However, I suspect that the larger belts might work with old 5.25" floppy drives that require a drive belt. Remember, as they stretch, they get narrower. Cheers, Chuck