Guys,i have had a look at this setup. Let me tell you it aint pretty, by that i mean what happens is when you try to accelerate the engine just lays flat and wont rev (AT ALL) and spits all the fuel back out of the carby.
Its not timing related,i changed the jets up and down sizes seemed at tad better with smaller ones in under no load but was very hard to drive to the point of rediculous.
My suggestion was to get some bigger chokes ie: i run twins with 32mm chokes so one carby would surely need at least 32mm chokes???.
I have never seen a carburettor act like this EVER.
Matt