You're not the only one to do that!
When fitting the pressure plate you need to get it aligned correctly. Before putting the screws in, check orientation by pressing on the plate with your fingers, if you can feel the friction plates are loose you're on wrong. Pull it off, rotate it and offer it up again.
My dealer (Bykebitz in Yateley) got me one in a couple of days, IIRC it was around £60 including VAT.