question zetor 3340 clutch problems - need help

[heatherlove]

My better half bought a zetor 3340 which had been sitting up a while because the owner was battling cancer and had not been able to maintenance it. The man who sold it said that he had just had the clutch replaced shortly before selling it. The clutch will only grind when the petal is pushed. The tractor won't stop when you push the clutch in. I dont think the throwout bearing is working. Can anyone tell me anything that may be helpful? The master and slave cylinder have both been replaced. I have gone thru and checked everything that I can think of. Am I going to have to split the tractor? ( never done that before) Is there anything left that I can check before having to do that? Any help would be appreciated!