Will it not depend slightly on what the wind has been doing for the previous couple of days? If it's been "Wind with river" then presumably a lot of the reason for timing it like that will have been blown out to sea?
Anyhow, its a good news / bad news ref. the Rib at the moment. Everything works, but only up to about 1/3 throttle where it turns the bottom cylinder into a giant piston fuel pump! - I am going to have to dismantle the bottom carb, and am really hoping it's as simple as bending the float arm a bit to make sure the valve closes. If I need a new float or valve needle I'll probably have to ask if anyone needs a crew unless someone has one in stock
On the plus side, at least I know the fuel pump is OK!
Tomorrow's fun (once I thaw my brain out!) is to figure out if i can get the carbs out without dismantling half the engine
..... I knew there was a reason I liked the old Yam!