'99 Clutch Question

Long story short, I bought a '99 FRC 6 speed, bone stock except for exhaust, with 60,000 miles. I have noticed that the car's clutch has a "loose" spot at the top. It has enough pressure to spring fully back, but it has very little resistance until about 1/2 way down...sometimes. Other times, there is only about 1" of play. Sometimes the clutch engages very low, right off the floor, other times the clutch engages much higher, like I am used to from other manual transmission cars I have driven.
Other than this, the car drives fantastic. and the clutch doesn't really bother me, however it is a bit odd. I just wanted to get the opinions of those more experienced than I am.
Is this something I should worry about and have repaired? What could be causing this?
I appreciate you taking the time to answer this newbie's questions!
-Blaine
Thanks for the reply!








