Clutch pedal issue

[Babyblue]

Alright guys...having bit of a problem. Can anyone tell me why my clutch pedal will have a hard time going down? It rarely happens, but when it does I can hear the return spring having trouble compressing? So maybe the spring is worren out? Some more info...clutch does have a leak at the firewall from the master cylinder(buying the new master asap) I keep the clutch rez filled so I don't cause any damage to anything else.Trans fluid is all good. Gears shift fine, no grinding or slipping. Anything at this point will help. Thanks alero community!