My son figured out an easy way to put the hose on the Carbs.
After the old hose is removed and the new hose is cut to approx. the correct length;
Slide a long "thin" Philips screwdriver thru the inside of the hose with the tip sticking out the end.
Place the end of the screwdriver inside of the hose barb on the carbs.
Slide the hose down and over the hose barb of the Tee. (While doing this, take care,,,, DO NOT APPLY FORCE TO HOSE FITTING)
Remove screwdriver.
The screwdriver I use is 3/16" or 1/4" Diameter and is about 10" long.
Hope this helps,
Ride safe, Ted
PS: The only problem that might arise from the thinner walled hose is "it might kink more easily than a thicker walled hose".
When you jnstall the hose, look closely that it is not trying to kink.