my husqy sms 125 has a 28mm dellorto vhst carburator, but the wr which, i think, has the same engine has an 38 mikuni tmx, can i upgrade without engine changes, like cranckshaft, other cilinder to a 38mm mikuni, i need a manifolt and carburator, do i need an other membrame (dont know english word) thing between crankcase and manifolt.
