ok here is my problem. my car has a hard time starting feels a lil like it is seized but when it does turn over it works great. also when the clutch peddel is pressed down it will rattle. and it will even stall it out if held down

 

might be the slave cylinder is bad and not keeping enough pressure on the pressure plate and is tryng to move the car and that would cause it to stall out

 

how hard is that to fix