Clutch Masters = not recommended by me.
Exactly what is the problem? Did you try bleeding the slave cylinder? Sometimes new slave cylinders will get a tiny amount of air in them. I had a car that was like that. I could drive it for like 3 months, and then one day- the clutch wouldn't engage. That's when I learned how to gravity bleed. I kept a small bottle of brake fluid with a rag under the hood, and the wrench I needed for the nipple in the glove box. When it wouldn't shift, I'd go out and pop the cap off the clutch master, open the bleeder nipple for a second, and let the air out. Wipe up any fluid, check fluid level (add before you bleed), reinstall the cap, and roll out. This is also when I found out that brake fluid eats paint