clutch is heavy FZS600 1999

[flakey]

hi guys, I'm really struggling to use my clutch after riding for 30mins or so, it seems my hand cant pull the lever in any more and hurts like hell-(guessing arthritus) I have taken the clutch cable off and lubed with oil-not seeing or feeling anything wrong with the cable once its off the bike as all moving freely and smooth, I have ordered another genuine clutch cable and waiting for it to arrive, is there anything else I could check or do to free up the clutch and make it Lighter? all sudgestions will be much appreciated.


thanks guys