I have such a program that does very good optimization for GSOS and hard drives developed by some past 1WSW team members years ago. It's a ProDOS 8 utility and it's very slow. But it does what it was designed to do. I've never found the time or inclination to release it before. I'll hunt it up, archive it and release it soon, with an uploads to Ground, Asimov and my own web site. Cheers, Tom