Wrenched

I think it's fair to say they were more expensive - in two ways! Dearer to buy and probably dearer to feed! To be fair they might have an edge in terms of performance but I'm not exactly sure what type of Solex we're talking here. The amount of air they shift it one thing, which dependes on size mainly but also on the details of the venturi and jets but probably equally important is driveability, which is all about immediacy of response and evenness of mixture delivery. you could also say startability. The Webers on Lotus Elans I've owned, and come to think of it Dellortos on a Matra had a tendency to poor hot starting. Always OK cold. I think the latter is actually a feature of most fixed-choke carburettors and is generally tied to heat under the bonnet and conducted from the cylinder head.

Doesn't say that in the manual