Thanks again everyone for your time and input on my 54 C11g that was fitted with a Amal 274 BU/1EH ran but would smoke tried every settings and the C11 was fitted with a 274AU/DA but only ran with a jap carb, (very well) but looks out of place when I ride my bikes to our local shows no trailers for me, but will try swapping the 375 with the other bikes, busy digging the footing for new workshop 16' x 12'.
Kev.