Honda nsc uprated clutch?

Has anyone fitted an aftermarket clutch to an nsc 50 / r ?
I bought a Malossi fly clutch , but the friction surfaces on the shoes are so thick that it touches the stock clutch Bell slightly.
This means it never gets up enough rpm and pulls away at really low revs , it doesn’t get up as much rpm as stock clutch.
The bell needs to be bigger I think , but I can’t find any for the nsc ?