Could very well be. Post 26 indicates this is a "clutch kit". One would hope they pack the correct stuff.
IMO, I think we agree the plate is not set for the .312" disc that he has since there is virtually no adjustment before driving the fingers into the springs. It likely could be adjusted in but then it can't be returned as it's been tampered with.
MP recommends checking finger height on a .310" standard for stock applications. Finger height should be 1.700".