REDUCER FOR FUEL LINE TO CARB

there's fuel line reducers out there: plastic, brass, threaded, etx. so it's just figuring out what you've got and what you need.

for example here's some barbed brass ones: LTWFITTING 1/4 in. x 3/8 in. I.D. Brass Hose Barb Reducer Splicer Fittings (10-Pack) HF3913R060410 - The Home Depot

but, depending on what you've got cooking it may be in your best interest and safety to just replace everything. that way you don't wind up with a cobbled together mess and potential for break down or spraying fuel all over a hot engine bay.

now let's see them pics!
Yues, I did see the brass reducers.
But, in the case of brass fittings, they fit inside the hose, so you are further reducing flow of fuel.
I do believe that whatever is under the 1/2 inch hose at the end of the card tube will be the determining factor in what I have to do.