Hi All a few months back one of my customers wanted to buy a single carb set up so he went online and found one from juan Fernandez it didn't come with any directions how to adjust it also it would not fit the 79 wing that it should fit , the front of the carb hit the cross member on the bulk head . After several emails to him and not getting any help we installed it by bending the cross member 1/4" forward , Then the next problem came up cant get the carb to idle down below 1200 RPM . So I did several more emails to him . At this time it is very hard to get the bike into first gear cause of the 1200 RPM . His customer service SUCKS !!!