I replaced clutch and clutch cable about two months ago. All was good. About a week ago my bike started to just pop outta first gear under heavy acceleration. Has done it three times now. Tonight the clutch has started to slip around 8000rpm. I adjusted it at the lever end, still slipped. So I adjusted it at the lower end, took it for a ride and it's slipping worse than earlier. Any reason why I've burnt thru a clutch so quickly? I haven't been doin any wheelies or clutch dumps

 

ru using an aftermarket clutch pack? sometimes theyr not quite the correct stack height and end up burning.
in either case u need to open her up and check whats going on inside

 

It's weird, when the bike is under heavy acceleration, around the 6000rpm mark the clutch slips a lil and then just slingshots

 

I'm with SunBlue.
Also if you're looking at doing the job again, are you in posession of a workshop manual like a Haynes manual?
It tells all the details how to exactly tune a clutch. It can make a huge difference...
Another thing could be the oil you're using, however I assume you don't use something extraordinary for this bike?