clutch problem
 

hi people new to this, on my 1999 boxster the clutch slave cylinder clip shot off and pushed all the fluid out and broke the rubber seal. replaced with new one which lasted about 2 weeks and the same thing happend again. took it to garage and they said the clutch may be warn thats why it keepspushing the slave cylinder out. put pin in the clip so as not to force it off but the clutch pedal only goes half way now. can anyone shed some light on this please, many thanx