Yes that's the next logical step.Slave cylinder issues? Any ideas would be greatly appreciated. Thanks
BUT you should be able to test the master by pinching off the hose in the middle while it is failing to see of pressure on the lever returns.
If not, your master cylinder is still not right.
P.S. If it is an OLD hose, pinching it off might cause it to crack and leak.
Might want to have one on hand just incase.