babifoo

Hi guys i was wondering if anyone could help me with my rx8. Ive had my baby for 7 months and within that time i have had to replace the clutch set. However now i have another problem. I was travelling on the motorway going up hill in six gear and i felt a lack of power. Am i just being paranoid and should i have changed down gear? Anyway i carried on until on level ground slowed down and stopped, switched of the engine and everything appreared fine no warning signs or anything. When i started the car back up and tried to take off there was severe noise coming from the fly wheel or the clutch plate when 1st gear was engaged once i engaged 2nd and 3rd and so on it was fine. Im worried it may be the clutch again, any advice?