hey man, thats definately stuffed if it slips when you feed power once its engaged.
Don't think you can adjust SX clutches much either because they are hydraulic.
It just so happens that i have an exedy heavy duty clutch from my SX before i did the conversion if your interested
Its only like 30% worn and still clamped like a mofo. I payed $360 for it 9 months ago. Asking $50