Actually it ended up coming off the station wagon with the older siamese engine - I am glad it fitted though.
Yes the engine ran best with full choke on with a hand also almost covering the air intake. Covering the dizzy suction pipe made no difference. I suspect the carby is very lean but adjustment did not make much difference. I am wondering if it is sucking in air through the inlet manifold gasket.
It was good to see it actually start though.

