Chainsaw Repair

I have found a couple of options to adjust my Zama W-26 3314 carb.

I bought two types of hoses to experiment. They both fit pretty snug on these carb screw splines.
The first I got was a 1/4" black air line hose from a well known auto parts store. Pretty stiff and tuff hose. It seems to grab the splines pretty good. Can be bought by the foot. Cost me .50 cents.
The second is a semi-clear hose from H. Depot that is normally used for refrigerator water lines. You can see the spline marks on the inside once removed from the screw. Had this around the shop so I took a foot of it to experiment. Not sure if you can buy small pieces of this. We bought it by the 10' roll. Don't recall the price but not too much.
Both of these hoses seem to have to same inside diameter. They both fit snugly through the adjusting tool holes in the side cover but will turn easily.