Potential CSC problems?

Ryguy

So I bought my Z back in 2011 and I have since put about 20k miles on it and my clutch went soft and stuck to the floor, which from what I gather is pretty common around that mileage, so I took it to the dealership and they fixed it and it was covered under warrantee so I wasn't worried. It was fixed within 2 days but it does make me worry because if this happens again then I don't think it will be covered under the warrantee because if I remember correctly my warrantee is a 3 year 30,000 mile warrantee. So what preventive measures can I take to either ensure this doesn't happen again and if it does it doesn't happen for a while? Or am I going to just have to deal with this on going problem every 20k miles or so?