Yeah i see what u mean its not a choke but can put gradually (little bit or a lot) unlike the button the 748s.
It only cuts out when cold before it reach 40 degrees c never once warm, I dont want to buy anything really for it never thought it would be this bad

He says its to do with back pressure removing cans takes some away so it got to be richened, i think the new cans are a lot more restrictive that 748 cans. If I take of cat be even more richer

50 miles a tank anyone??