Rebuilding the carb for 'Morini the Minx' 125H single cylinder 4 stroke. Careful dismantling revealed some potential horrors and reasons "Why?" the wee beastie was reluctant to idle and rough on the opening throttle.
Main jet more than 10% oversize, float needle worn, throttle needle 'cleaned' using emery, but still pitted!
A clear and detailed website, with rapid replies to email enquiries, very courteous service, easy ordering and rapid despatch of everything required for an obsolete carb has been a welcome experience. Prices are not "cheap" but quality original manufacturers items made to spec rarely are.
If you are using a Dellorto on the bike, either as original equipment or a special, then 'Eurocarb' link:
Eurocarb are the people to speak with.
Bill